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In mathematics, a ratio (/ˈreɪ.ʃ(i.)oʊ/) shows how many times one number contains another. For example, if there are eight oranges and six lemons in a...

In mathematics, two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities. Expressed...

In finance, the quick ratio, also known as the acid-test ratio, is a liquidity ratio that measures the ability of a company to use near-cash assets (or...

A ratio spread or frontspread is a multi-leg options position. Like a vertical, the ratio spread involves buying and selling options on the same underlying...

Calmar ratio (or Drawdown ratio) is a performance measurement used to evaluate Commodity Trading Advisors and hedge funds. It was created by Terry W. Young...

In criminal law, Blackstone's ratio is the ratio between letting guilty go unpunished (error of impunity) and convicting innocent people, two forms of...

The Strehl ratio is a measure of the quality of optical image formation, originally proposed by Karl Strehl, after whom the term is named. Used variously...

A ratio is a relationship between numbers or quantities. Ratio may also refer to: Ratio (journal), a philosophical quarterly Ratio, Arkansas, a community...

F-ratio or f-ratio may refer to: The F-ratio used in statistics, which relates the variances of independent samples; see F-distribution f-ratio (oceanography)...

The information ratio measures and compares the active return of an investment (e.g., a security or portfolio) compared to a benchmark index relative...

In materials science and solid mechanics, Poisson's ratio (symbol: ν (nu)) is a measure of the Poisson effect, the deformation (expansion or contraction)...

stripping ratio or strip ratio refers to the amount of waste (or overburden) that must be removed to release a given ore quantity. It is a number or ratio that...

In statistics, the correlation ratio is a measure of the curvilinear association between the statistical dispersion within individual categories and the...

aspect ratio of a geometric shape is the ratio of its sizes in different dimensions. For example, the aspect ratio of a rectangle is the ratio of its...

In finance, the operating ratio is a company's operating expenses as a percentage of revenue. This financial ratio is most commonly used for industries...

(see concentration) or mass ratio (see stoichiometry). In atmospheric chemistry, mixing ratio usually refers to the mole ratio ri, which is defined as the...

The aspect ratio of an image is the ratio of its width to its height. It is expressed as two numbers separated by a colon, in the format width:height....

probability weighted ratio of gains versus losses for some threshold return target. The ratio is an alternative for the widely used Sharpe ratio and is based...

The digit ratio is the ratio taken of the lengths of different digits or fingers on a hand. The most commonly studied digit ratio is that of the 2nd (index...

The expense ratio is a term used in investment management or corporate finance to analyze the annual cost of owning an investment fund or operating a...

In epidemiology, a rate ratio, sometimes called an incidence density ratio or incidence rate ratio, is a relative difference measure used to compare the...

Envy ratio, in finance, refers to the ratio of the price paid by investors to the price paid by the management team for their respective shares of equity...

Import ratio, in economics and government finance, is the ratio of total imports of a country to that country’s total foreign exchange (FX) reserves. The...

The efficiency ratio indicates the expenses as a percentage of revenue (expenses / revenue), with a few variations – it is essentially how much a corporation...

The current ratio is a liquidity ratio that measures whether a firm has enough resources to meet its short-term obligations. It is the ratio of a firm's...

A feed ratio is a measure of profitability of animal husbandry, expressed as the ratio between the cost of food and the price of the final product. For...

secondary sex ratio — ratio at birth tertiary sex ratio — ratio in sexually mature organisms The tertiary sex ratio is equivalent to the adult sex ratio (ASR)...

Dependency ratios are ratios of the numbers of dependents (youths aged 0–14 and/or elderly aged 65+) to the number of working-age adults (15–64). They...

In finance, the Sharpe ratio (also known as the Sharpe index, the Sharpe measure, and the reward-to-variability ratio) measures the performance of an investment...

price–earnings ratio, also known as P/E ratio, P/E, or PER, is the ratio of a company's share price to the company's earnings per share. The ratio is used for...

The compression ratio is the ratio between the maximum and minimum volume during the compression stage of the power cycle in a piston or Wankel engine...

In analytic geometry, the isoperimetric ratio of a simple closed curve in the Euclidean plane is the ratio L2/A, where L is the length of the curve and...

The return ratio of a dependent source in a linear electrical circuit is the negative of the ratio of the current (voltage) returned to the site of the...

The Sortino ratio measures the risk-adjusted return of an investment asset, portfolio, or strategy. It is a modification of the Sharpe ratio but penalizes...

The waist–hip ratio or waist-to-hip ratio (WHR) is the dimensionless ratio of the circumference of the waist to that of the hips. This is calculated as...

ratio is an exchange rate of the shares of the companies that undergo a merger; see Stock swap and Mergers and acquisitions § Stock. The swap ratio determines...

In nephrology, the delta ratio, or "delta-delta" (denoted Δ/Δ), is a formula that can be used to evaluate whether a mixed acid–base disorder (metabolic...

In ecological theory, the Hutchinson's ratio is the ratio of the size differences between similar species when they are living together as compared to...

The PEG ratio (price/earnings to growth ratio) is a valuation metric for determining the relative trade-off between the price of a stock, the earnings...

human sex ratio is the ratio of males to females in a population in the context of anthropology and demography. In humans, the natural sex ratio at birth...

the V2 ratio is to improve on existing and popular measures of risk-adjusted return, such as the Sharpe ratio, information ratio or Sterling ratio by taking...

In geometry, the cross-ratio, also called the double ratio and anharmonic ratio, is a number associated with a list of four collinear points, particularly...

The Academy ratio of 1.375:1 (abbreviated as 1.37:1) is an aspect ratio of a frame of 35 mm film when used with 4-perf pulldown. It was standardized by...

Selection ratio is a human resources term that refers to the ratio of the number of job positions to the number of job applicants and is used in the context...

The contrast ratio (CR) is a property of a display system, defined as the ratio of the luminance of the brightest shade (white) to that of the darkest...

The Hausner ratio is a number that is correlated to the flowability of a powder or granular material. It is named after the engineer Henry H. Hausner...

odds ratio (OR) is a statistic that quantifies the strength of the association between two events, A and B. The odds ratio is defined as the ratio of the...

The human sex ratio is the comparative number of males with respect to each female in a population. This is a list of sex ratios by country or region....

In survival analysis, the hazard ratio (HR) is the ratio of the hazard rates corresponding to the conditions characterised by two distinct levels of a...

The X:A ratio is the ratio between the number of X chromosomes and the number of sets of autosomes in an organism. This ratio is used primarily for determining...

In telecommunications, maximum-ratio combining (MRC), or maximal-ratio combining, is a method of diversity combining in which: the signals from each channel...

In mathematical analysis, the ratio test is a test (or "criterion") for the convergence of a series ∑ n = 1 ∞ a n , {\displaystyle \sum _{n=1}^{\infty...

Loan-to-deposit ratio (LTD ratio or LDR) is a ratio between the banks total loans and total deposits. The ratio is generally expressed in percentage terms...

Ratio decompression (usually referred to in abbreviated form as ratio deco) is a technique for calculating decompression schedules for scuba divers engaged...

In statistics, the likelihood-ratio test is a hypothesis test that involves comparing the goodness of fit of two competing statistical models, typically...

the silver ratio is a geometrical proportion with exact value 1 + √2, the positive solution of the equation x2 = 2x + 1. The name silver ratio is by analogy...

Extraction ratio is a measure in renal physiology, primarily used to calculate renal plasma flow in order to evaluate renal function. It measures the...

In mathematics, the supergolden ratio is a geometrical proportion, given by the unique real solution of the equation x3 = x2 + 1. Its decimal expansion...

aspect ratio with a width of 16 units and height of 9 units. Once seen as an exotic aspect ratio, since 1999, it has become the most common aspect ratio for...

A financial ratio or accounting ratio states the relative magnitude of two selected numerical values taken from an enterprise's financial statements....

to the golden ratio: Binet's formula expresses the n-th Fibonacci number in terms of n and the golden ratio, and implies that the ratio of two consecutive...

A ratio distribution (also known as a quotient distribution) is a probability distribution constructed as the distribution of the ratio of random variables...

Researched and devised by Dr. Oliphant Jackson, the Jackson ratio is a method of determining whether a member of the tortoise species Testudo graeca or...

The gold–silver ratio compares the market price of one troy ounce of gold with one troy ounce of silver. CME Group described the ratio as the number of...

Treynor reward-to-volatility model (sometimes called the reward-to-volatility ratio or Treynor measure), named after American economist Jack L. Treynor, is...

A spare ratio or spares ratio is the percentage of unused vehicles operated by a public transport operator during peak service periods. It is calculated...

"Ratio scripta", or "written reason", was the assessment of Roman law commonly held in Europe during the Medieval period. It emerged during the revival...

Signal-to-noise ratio (SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background...

The bypass ratio (BPR) of a turbofan engine is the ratio between the mass flow rate of the bypass stream to the mass flow rate entering the core. A 10:1...

The Lerman ratio, named after economist Robert I. Lerman, suggest that a government benefit to the underemployed, such as welfare, will presumably reduce...

Cerebroplacental ratio is a tool used in obstetric ultrasound to predict adverse pregnancy outcome. It is measured by dividing the pulsatility index of...

A benefit–cost ratio (BCR) is an indicator, used in cost–benefit analysis, that attempts to summarize the overall value for money of a project or proposal...

In economics, the wage ratio refers to the ratio of the top salaries in a group (company, city, country, etc.) to the bottom salaries. It is a measure...

Stroke ratio, today often defined as bore/stroke ratio, is a term to describe the ratio between cylinder bore diameter and piston stroke length in a reciprocating...

assets. Closely related to leveraging, the ratio is also known as risk ratio, gearing ratio or leverage ratio. The two components are often taken from the...

In probability theory, the Mills ratio (or Mills's ratio) of a continuous random variable X {\displaystyle X} is the function m ( x ) := F ¯ ( x ) f (...

In corporate finance, the retention ratio indicates the percentage of a company's earnings that are not paid out in dividends to shareholders but credited...

is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter. It appears in many formulae...

The E/A ratio is a marker of the function of the left ventricle of the heart. It represents the ratio of peak velocity blood flow from left ventricular...

The bias ratio is an indicator used in finance to analyze the returns of investment portfolios, and in performing due diligence. The bias ratio is a concrete...

The display aspect ratio (DAR) is the aspect ratio of a display device. It is a proportional relationship between the physical width and the height of...

The Sterling ratio (SR) is a measure of the risk-adjusted return of an investment portfolio. While multiple definitions of the Sterling ratio exist, it measures...

The density ratio of a column of seawater is a measure of the relative contributions of temperature and salinity in determining the density gradient....

The photothermal ratio (PTR), also named photothermal quotient, is a variable that characterizes the amount of light available to plants relative to the...

A carbon-to-nitrogen ratio (C/N ratio or C:N ratio) is a ratio of the mass of carbon to that of nitrogen in organic residues. It can, amongst other things...

The Texas ratio is a metric used to assess the extent of a bank's credit problems. Developed by Gerard Cassidy and others at RBC Capital Markets, it is...

the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of...

The brain-to-blood ratio, or brain–blood ratio, is a statistic in pharmacokinetics defined as the ratio of a drug's brain concentrations relative to its...

In accounting, the liquidity ratio expresses a company's ability to repay short-term creditors out of its total cash. It is the result of dividing the...

A loss ratio is a ratio of losses to gains, used normally in a financial context. It is the reciprocal of the gross profit ratio (commonly known as the...

The variation ratio is a simple measure of statistical dispersion in nominal distributions; it is the simplest measure of qualitative variation. It is...

The propeller advance ratio or coefficient is a dimensionless number used in aeronautics and marine hydrodynamics to describe the relationship between...

sizes (except some envelopes) have the same aspect ratio, √2:1, within rounding error. This ratio has the unique property that when cut or folded in half...

Ratio decidendi (US: /ˌreɪʃioʊ ˌdɪsaɪˈdɛndi, -daɪ/; Latin plural rationes decidendi) is a Latin phrase meaning "the reason" or "the rationale for the...

the gyromagnetic ratio (also sometimes known as the magnetogyric ratio in other disciplines) of a particle or system is the ratio of its magnetic moment...

Ratio is an unincorporated community in Phillips County, Arkansas, United States. The etymology of the name "Ratio" is obscure. U.S. Geological Survey...

to the ratio of span to chord. Thus, a long, narrow wing has a high aspect ratio, whereas a short, wide wing has a low aspect ratio. Aspect ratio and other...

The price-to-sales ratio (P/S ratio or PSR) is a financial ratio used to assess a company's market value relative to its revenue. It is calculated by...

In respiratory physiology, the ventilation/perfusion ratio (V/Q ratio) is a ratio used to assess the efficiency and adequacy of the ventilation-perfusion...

Medical care ratio (MCR), also known as medical cost ratio, medical loss ratio, and medical benefit ratio, is a metric used in managed health care and...

The Ratio Club was a small British informal dining club from 1949 to 1958 of young psychiatrists, psychologists, physiologists, mathematicians and engineers...

Air–fuel ratio (AFR) is the mass ratio of air to a solid, liquid, or gaseous fuel present in a combustion process. The combustion may take place in a...

In mathematics, the plastic ratio is a geometrical proportion, given by the unique real solution of the equation x3 = x + 1. Its decimal expansion begins...

Turndown ratio refers to the width of the operational range of a device, and is defined as the ratio of the maximum capacity to minimum capacity. For...

golden ratio in Wiktionary, the free dictionary. The golden ratio is approximately 1.618 : 1. Golden ratio may also refer to: The Golden Ratio (album)...

A Certain Ratio (abbreviated as ACR) are an English post-punk band formed in Greater Manchester in 1977 by Peter Terrell (guitar), Simon Topping (vocals...

The dividend payout ratio is the fraction of net income a firm pays to its stockholders in dividends: Dividend payout ratio = Dividends Net Income for...

A solvency ratio is a financial ratio used to assess an organisation's ability to meet its longer-term obligations and remain financially sound over time...

The ratio estimator is a statistical estimator for the ratio of means of two random variables. Ratio estimates are biased and corrections must be made...

Receivable turnover ratio or debtor's turnover ratio is an accounting measure used to measure how effective a company is in extending credit as well as...

In Six Sigma, the discrimination ratio or reliability design index is a performance metric of attribute agreement analysis which assesses the level of...

The eudysmic ratio (also spelled eudismic ratio) represents the difference in pharmacologic activity between the two enantiomers of a drug. In most cases...

Consolidation ratio within network infrastructure for Internet hosting, is the number of virtual servers that can run on each physical host machine. Many...

student–teacher ratio or student–faculty ratio refers to the number of students for every teacher in a school. For example, a student–teacher ratio of 10:1 indicates...

The debt ratio or debt to assets ratio is a financial ratio which indicates the percentage of a company's assets which are funded by debt. It is measured...

Bearing Ratio (CBR) is a measure of the strength of the subgrade of a road or other paved area, and of the materials used in its construction. The ratio is...

Slip ratio is a means of calculating and expressing the slipping behavior of the wheel of an automobile. It is of fundamental importance in the field...

pay level involves calculating a compa-ratio. Compa-ratio is the short form for comparative ratio. Compa-ratio is calculated as the employee's current...

The Lexis ratio is used in statistics as a measure which seeks to evaluate differences between the statistical properties of random mechanisms where the...

The nuclear–cytoplasmic ratio (also variously known as the nucleus:cytoplasm ratio, nucleus–cytoplasm ratio, N:C ratio, or N/C) is a measurement used in...

In human biology, the testosterone–cortisol ratio describes the ratio between testosterone, the primary male sex hormone and an anabolic steroid, and...

name supersilver ratio is by analogy with the silver ratio, the positive solution of the equation x2 = 2x + 1, and the supergolden ratio. Three quantities...

the fineness ratio is the ratio of the length of a body to its maximum width. Shapes that are short and wide have a low fineness ratio, those that are...

economics, engineering, business management and marketing the price–performance ratio is often written as cost–performance, cost–benefit or capability/price (C/P)...

The Ratio atque Institutio Studiorum Societatis Iesu (Method and System of the Studies of the Society of Jesus), often abbreviated as Ratio Studiorum...

Pressure ratio may refer to: Compression ratio, for piston engines Overall pressure ratio, for gas turbine engines Pressure ratio, the compression ratio of...

front-to-back ratio (also known as front-to-rear ratio) can mean: The ratio of power gain between the front and rear of a directional antenna. Ratio of signal...

In medicine, the urea-to-creatinine ratio (UCR), known in the United States as BUN-to-creatinine ratio, is the ratio of the blood levels of urea (BUN) (mmol/L)...

Floor area ratio (FAR) is the ratio of a building's total floor area (gross floor area) to the size of the piece of land upon which it is built. It is...

The ratio detector is a type of detector circuit, commonly used in radio receivers for demodulating frequency modulated (FM) signal. The ratio detector...

Unlike the reward-to-variability ratios, such as Sharpe ratio and Sortino ratio, the Rachev ratio is a reward-to-risk ratio, which is designed to measure...

the lighting ratio, the higher the contrast of the image; the lower the ratio, the lower the contrast. The lighting ratio is the ratio of the light levels...

The seasonal energy efficiency ratio (SEER) is a meaurement used to rate the efficiency of air conditioners. The SEER rating of a device is the cooling...

The price-to-book ratio, or P/B ratio, (also PBR) is a financial ratio used to compare a company's current market value to its book value (where book value...

The scale ratio of a model represents the proportional ratio of a linear dimension of the model to the same feature of the original. Examples include a...

The equity ratio is a financial ratio indicating the relative proportion of equity used to finance a company's assets. The two components are often taken...

In mathematics, a superpartient ratio, also called superpartient number or epimeric ratio, is a rational number that is greater than one and is not superparticular...

Thrust-to-weight ratio is a dimensionless ratio of thrust to weight of a reaction engine or a vehicle with such an engine. Reaction engines include jet...

In finance the put/call ratio (or put-call ratio, PCR) is a technical indicator demonstrating investor sentiment. The ratio represents a proportion between...

The AST/ALT ratio or De Ritis ratio is the ratio between the concentrations of two enzymes, aspartate transaminase (AST) and alanine transaminase, a.k...

A pixel aspect ratio (PAR) is a mathematical ratio that describes how the width of a pixel in a digital image compares to the height of that pixel. Most...

Zener ratio is a dimensionless number that is used to quantify the anisotropy for cubic crystals. It is sometimes referred as anisotropy ratio and is...

In radio engineering and telecommunications, standing wave ratio (SWR) is a measure of impedance matching of loads to the characteristic impedance of...

The debt service coverage ratio (DSCR), also known as the debt coverage ratio (DCR), is a financial ratio that measures an entity's ability to generate...

extinction ratio (re) is the ratio of two optical power levels of a digital signal generated by an optical source, e.g., a laser diode. The extinction ratio may...

The waist-to-height ratio (WHtR, or WSR: waist-to-stature ratio) is the waist circumference divided by body height, both measured in the same units. WHtR...

number. A difference of 1.0 in magnitude corresponds to the brightness ratio of 100 5 {\displaystyle {\sqrt[{5}]{100}}} , or about 2.512. For example...

walk-to-strikeout ratio (BB/K) is a measure of a hitter's plate discipline and knowledge of the strike zone. Generally, a hitter with a good walk-to-strikeout ratio must...

Ratio Tech is a San Francisco-based financial technology company that provides technology procurement and funding services through its platform. Ratio...

"Monetae cudendae ratio" (also spelled "Monetæ cudendæ ratio"; English: "On the Minting of Coin" or "On the Striking of Coin"; sometimes, "Treatise on...

Steering ratio refers to the ratio between the turn of the steering wheel (in degrees) or handlebars and the turn of the wheels (in degrees). The steering...

quality assessment, the outliers ratio (OR) is a measure of the performance of an objective video quality metric. It is the ratio of "false" scores given by...

The Bowen ratio is used to describe the type of heat transfer for a surface that has moisture. Heat transfer can either occur as sensible heat (differences...

The Redfield ratio or Redfield stoichiometry is the consistent atomic ratio of carbon, nitrogen and phosphorus found in marine phytoplankton and throughout...

The jaws ratio is a measure used in finance to demonstrate the extent to which a trading entity's income growth rate exceeds its expenses growth rate...

In off-road driving, crawl ratio is the lowest overall gear ratio that a vehicle's drivetrain is capable of, i.e. the slowest vehicle speed for the same...

actuator. If the turbine's aspect ratio is too large, the turbo will fail to create boost at low speeds; if the aspect ratio is too small, the turbo will choke...

The shooting ratio in filmmaking and television production is the ratio between the total duration of its footage created for possible use in a project...

The Wilson ratio of a metal is the dimensionless ratio of the zero-temperature magnetic susceptibility to the coefficient of the linear temperature term...

The motion ratio of a mechanism is the ratio of the displacement of the point of interest to that of another point. The most common example is in a vehicle's...

In aeronautical engineering, overall pressure ratio, or overall compression ratio, is the amount of times the pressure increases due to ram compression...

superparticular ratio, also called a superparticular number or epimoric ratio, is the ratio of two consecutive integer numbers. More particularly, the ratio takes...

length, there are various methods in use to measure coastlines through ratios and other metrics.[citation needed] A coastline of zero indicates that the...

of gears and gear trains include: The gear ratio of the pitch circles of mating gears defines the speed ratio and the mechanical advantage of the gear set...

Axial ratio, for any structure or shape with two or more axes, is the ratio of the length (or magnitude) of those axes to each other - the longer axis...

In economics, the debt-to-GDP ratio is the ratio of a country's accumulation of government debt (measured in units of currency) to its gross domestic product...

In economics and government finance, a country’s debt service ratio is the ratio of its debt service payments (principal + interest) to its export earnings...

In aerodynamics, the lift-to-drag ratio (or L/D ratio) is the lift generated by an aerodynamic body such as an aerofoil or aircraft, divided by the aerodynamic...

armed conflicts, the civilian casualty ratio (also civilian death ratio, civilian-combatant ratio, etc.) is the ratio of civilian casualties to combatant...

seats-to-votes ratio, also known as the advantage ratio, is a measure of equal representation of voters. The equation for seats-to-votes ratio for a political...

In architecture, the slenderness ratio, or simply slenderness, is an aspect ratio, the quotient between the height and the width of a building. In structural...

Jim Brown. Rodgers has led the NFL six times in touchdown-to-interception ratio (2011, 2012, 2014, 2018, 2020, 2021); six times in lowest passing interception...

Ratio is a peer-reviewed academic journal of analytic philosophy, edited by David S. Oderberg (Reading University) and published by Wiley-Blackwell. Ratio...

Gini coefficient (/ˈdʒiːni/ JEE-nee), also known as the Gini index or Gini ratio, is a measure of statistical dispersion intended to represent the income...

ratio of the system's focal length to the diameter of the entrance pupil ("clear aperture"). The f-number is also known as the focal ratio, f-ratio,...

single, or fixed, gear ratio or it can have variable ratios; a variable-ratio transmission can have multiple discrete gear ratios or be continuously variable...

In chemistry, a sample's oxygen–argon ratio (or oxygen/argon ratio) is a comparison between the concentrations of oxygen (O2) and the noble gas argon (Ar)...

The CD4+/CD8+ ratio is the ratio of T helper cells or regulatory T cells (Tregs) (with the surface marker CD4) to cytotoxic T cells (with the surface marker...

ratio, also known as Tobin's q, is an economics term for the ratio between the market value and replacement value of the same physical asset. Q ratio...

refers to the 4:3 (1.33:1) aspect ratio of early standard television screens and computer monitors. Widescreen ratios started to become more popular in...

The consumer leverage ratio (CLR) is the ratio of total household debt to disposable personal income. In the United States these are reported, respectively...

The PGM Ultima Ratio is a French sniper rifle. It uses the 7.62×51mm NATO cartridge but depending on the barrel variant can also be chambered for several...

concentration ratios are used to quantify market concentration and are based on companies' market shares in a given industry. A concentration ratio (CR) is...

CASA ratio stands for current and savings account ratio. CASA ratio of a bank is the ratio of deposits in current, and saving accounts to total deposits...

Vote-ratio, weight-ratio, or population-ratio monotonicity is a property of some apportionment methods. It says that if the entitlement for A {\displaystyle...

The book-to-bill ratio, also known as the BB ratio or BO/BI ratio, is the ratio of orders received to the amount billed for a specific period, usually...

The engine pressure ratio (EPR) is the total pressure ratio across a jet engine, measured as the ratio of the total pressure at the exit of the propelling...

vapor per unit mass of dry air, also known as the "humidity ratio" or "mass mixing ratio" (see also Specific humidity below), which is better suited for...

In mathematics, the half-period ratio τ of an elliptic function is the ratio τ = ω 2 ω 1 {\displaystyle \tau ={\frac {\omega _{2}}{\omega _{1}}}} of the...

transformer, with voltage ratio and winding turns ratio both being inversely proportional to the corresponding current ratio. The load impedance referred...

The atomic ratio is a measure of the ratio of atoms of one kind (i) to another kind (j). A closely related concept is the atomic percent (or at.%), which...

In optics, Matthiessen's ratio is the ratio between the distance from the centre of the lens to the retina, versus the lens radius in fish and other aquatic...

Gross enrolment ratio (GER) or gross enrolment index (GEI) is a statistical measure used in the education sector, and formerly by the UN in its Education...

The relative risk (RR) or risk ratio is the ratio of the probability of an outcome in an exposed group to the probability of an outcome in an unexposed...

The ratio of the mass-flow of air bypassing the engine core to the mass-flow of air passing through the core is referred to as the bypass ratio. The...

Kadowaki–Woods ratio is the ratio of A, the quadratic term of the resistivity and γ2, the square of the linear term of the specific heat. This ratio is found...

Sex ratio is used to describe the ratio of females to males in a population. In India, the sex ratio has been estimated via a number of methods and data...

T-Lymphocyte Helper/Suppressor Profile (Helper/Suppressor ratio, T4:T8 ratio, CD4:CD8 ratio) is a basic laboratory test in which the percentage of CD3-positive...

The expansion ratio of a liquefied and cryogenic substance is the volume of a given amount of that substance in liquid form compared to the volume of...

CET1 ratio {\displaystyle {\frac {\mbox{CET1}}{\mbox{RWAs}}}={\mbox{CET1}}\;{\textrm {ratio}}} Basel III requires banks to have a minimum CET1 ratio (Common...

networking, the contention ratio is the ratio of the potential maximum demand to the actual bandwidth. The higher the contention ratio, the greater the number...

The A/S ratio is the proportion of the brain not directly connected with either receptor inputs or motor outputs, where A is the association cortex and...

ratio (PTR), also known as peak-to-trough variation or peak-to-trough fluctuation, is a parameter in pharmacokinetics which is defined as the ratio of...

Blood plasma is a light amber-colored liquid component of blood in which blood cells are absent, but which contains proteins and other constituents of...

In physics, the proton-to-electron mass ratio (symbol μ or β) is the rest mass of the proton (a baryon found in atoms) divided by that of the electron...

The Ratio Institute is an independent Swedish research institute focusing on the conditions for enterprise, entrepreneurship and market economy and political...

The neutron–proton ratio (N/Z ratio or nuclear ratio) of an atomic nucleus is the ratio of its number of neutrons to its number of protons. Among stable...

having steep stadium seating and very large screens with a tall aspect ratio (about 1.43:1), though many films shot using IMAX cameras are shown in a...

The maternal mortality ratio (MMR) is the annual number of female deaths per 100,000 live births from any cause related to or aggravated by pregnancy...

Brain–body mass ratio, also known as the brain–body weight ratio, is the ratio of brain mass to body mass, which is hypothesized to be a rough estimate...

In telecommunications, the carrier-to-noise ratio, often written CNR or C/N, is the signal-to-noise ratio (SNR) of a modulated signal. The term is used...

Loss exchange ratio is a figure of merit in attrition warfare, and is generally defined as the ratio of the losses (e.g., casualties) sustained by each...

The K/U Ratio is the ratio of a slightly volatile element, potassium (K), to a highly refractory element, uranium (U). It is a useful way to measure the...

The answer-seizure ratio (ASR) is a measurement of network quality and call success rates in telecommunication. It is the percentage of answered telephone...

A close-ratio transmission describes a motor vehicle transmission with a smaller than average difference between the gear ratios. They are most often used...

equivalent 8:5, is an aspect ratio commonly used for computer displays and tablet computers. It is equal to 8/5, close to the golden ratio ( φ {\displaystyle \varphi...

Sex ratio is used to describe the ratio of females to males in a population. The sex ratio in Pakistan is generally male-skewed, with more males than females...

The surface-area-to-volume ratio or surface-to-volume ratio (denoted as SA:V, SA/V, or sa/vol) is the ratio between surface area and volume of an object...

Power-to-weight ratio (PWR, also called specific power, or power-to-mass ratio) is a calculation commonly applied to engines and mobile power sources to...

In epidemiology, the standardized mortality ratio or SMR, is a quantity, expressed as either a ratio or percentage quantifying the increase or decrease...

In corrosion of metals, the Pilling–Bedworth ratio (P–B ratio) is the ratio of the volume of the elementary cell of a metal oxide to the volume of the...

The farebox recovery ratio (also called fare recovery ratio, fare recovery rate or other terms) of a passenger transportation system is the fraction of...

Aldosterone-to-renin ratio (ARR) is the mass concentration of aldosterone divided by the plasma renin activity or by serum renin concentration in blood...

Coverage ratio may refer to Building coverage ratio, related to floor area ratio Debt service coverage ratio Interest coverage ratio This disambiguation...

of the elements of the human body to each other and to the whole. These ratios are used in depictions of the human figure and may become part of an artistic...

such as leukemia and anemia. The normal myeloid-to-erythroid ratio is around 3:1; this ratio may increase in myelogenous leukemias, decrease in polycythemias...

The short interest ratio (also called days-to-cover ratio) represents the number of days it takes short sellers on average to cover their positions, that...

bank. This rate is commonly referred to as the cash reserve ratio or shortened as reserve ratio. Though the definitions vary, the commercial bank's reserves...

The cash flow to debt ratio is a financial ratio that measures a company's ability to cover its total debt with its operating cash flow. It is calculated...

rate that is being treated. This is commonly called the liquid-to-gas ratio (L/G ratio) and uses the units of gallons per 1,000 actual cubic feet or litres...

In Codice Ratio is a research project designed to study and use novel techniques such as Optical Character Recognition and Artificial Intelligence to...

Traditional financial ratio analysis more commonly includes liquidity ratios, profitability ratios, efficiency ratios, and leverage ratios. Measures related...

A risk–benefit ratio (or benefit-risk ratio) is the ratio of the risk of an action to its potential benefits. Risk–benefit analysis (or benefit-risk analysis)...

associated units of measurement. These may be ratios of quantities with the same physical units or ratios of dimensionally equal products with identical...

terms, an interval is the ratio between two sonic frequencies. For example, any two notes an octave apart have a frequency ratio of 2:1. This means that...

Skylark (May 16, 2018). "The influence of leg-to-body ratio, arm-to-body ratio and intra-limb ratio on male human attractiveness". Royal Society Open Science...

Dependency ratios are ratios of the numbers of dependents (youths aged 0–14 and/or elderly aged 65+) to the number of working-age adults (15–64). They...

In anti-ballistic missile (ABM) defence the cost-exchange ratio is the ratio of the incremental cost to the aggressor of getting one additional warhead...

classification, the diagnostic odds ratio (DOR) is a measure of the effectiveness of a diagnostic test. It is defined as the ratio of the odds of the test being...

to a wider aspect ratio, first to the 16:10 ratio. The 16:10 ratio allowed some compromise between showing older 4:3 aspect ratio broadcast TV shows...

In pharmacokinetics, the drug accumulation ratio (Rac) is the ratio of accumulation of a drug under steady state conditions (i.e., after repeated administration)...

The tooth-to-tail ratio (T3R), in military jargon, is the number of military personnel it takes to supply and support ("tail") each combat soldier ("tooth")...

Differentials can also provide a gear ratio between the input and output shafts (called the "axle ratio" or "diff ratio"). For example, many differentials...

Residual-resistivity ratio (also known as Residual-resistance ratio or just RRR) is usually defined as the ratio of the resistivity of a material at room...

or as the dimensionless ratio between that measure and the focal length. In other photography, it is usually given as a ratio. A usual expectation is...

The signal-to-interference ratio (SIR or S/I), also known as the carrier-to-interference ratio (CIR or C/I), is the quotient between the average received...

The Working Capital Turnover Ratio is a financial ratio that measures how efficiently a company uses its working capital to generate sales. It is calculated...

of aspect ratios (relationship of image width to height) used in film, television and computer screens. For TV, the original screen ratio for broadcasts...

The sodium adsorption ratio (SAR) is an irrigation water quality parameter used in the management of sodium-affected soils. It is an indicator of the...

The cyclically adjusted price-to-earnings ratio (CAPE, Shiller P/E, or P/E 10 ratio) is a stock valuation measure usually applied to the US S&P 500 equity...

The neutrophil to lymphocyte ratio (NLR) reflects systemic inflammation, which plays an important role in the process of treating ischemic strokes. In...

that basis, Lehman held $373 billion of "net assets" and a "net leverage ratio" of 16.1. While leverage magnifies profits when the returns from the asset...

Variable compression ratio (VCR) is a technology to adjust the compression ratio of an internal combustion engine while the engine is in operation. This...

the census data in China has recorded a significant imbalance in the sex ratio toward the male population, meaning there are fewer women than men. This...

this screen aspect ratio is a constant display height when displaying other content with a lesser aspect ratio. The 64:27 aspect ratio of "21:9" is an extension...

In no-limit or pot-limit poker, a player's M-ratio (also called "M number", "M factor" or just "M") is a measure of the health of a player's chip stack...

of experiments, a sample ratio mismatch (SRM) is a statistically significant difference between the expected and actual ratios of the sizes of treatment...

The reserves-to-production ratio (RPR or R/P) is the remaining amount of a non-renewable resource, expressed in time. While applicable to all natural...

The lecithin–sphingomyelin ratio (L/S ratio or L-S ratio) is a test of fetal amniotic fluid to assess for fetal lung immaturity. Lungs require surfactant...

The loan-to-value (LTV) ratio is a financial term used by lenders to express the ratio of a loan to the value of an asset purchased. In real estate, the...

eRPF Extraction ratio {\displaystyle {\text{Actual RPF}}={\frac {\text{eRPF}}{\text{Extraction ratio}}}} where extraction ratio is the ratio of compound entering...

The potential support ratio (PSR) is the number of people age 15–64 per one older person aged 65 or older. This ratio describes the burden placed on the...

high stresses. Trouton's ratio is the ratio of extensional viscosity to shear viscosity. For a Newtonian fluid, the Trouton ratio is 3. Shear-thinning liquids...

The mass-to-charge ratio (m/Q) is a physical quantity relating the mass (quantity of matter) and the electric charge of a given particle, expressed in...

In probability theory and statistics, the F-distribution or F-ratio, also known as Snedecor's F distribution or the Fisher–Snedecor distribution (after...

projector lens and the screen on which it shines. It is given as a ratio (called throw ratio), which describes the relationship between the distance to the...

Architectural gear ratio, also called anatomical gear ratio (AGR) is a feature of pennate muscle defined by the ratio between the longitudinal strain of...

Inverse ratio ventilation (IRV) is not necessarily a mode of mechanical ventilation though it may be referred to as such. IRV is a strategy (method or...

company's debt-to-capital ratio (D/C ratio) is the ratio of its total debt to its total capital, its debt and equity combined. The ratio measures a company's...

ratio ( e {\displaystyle e} ) of a mixture of solids and fluids (gases and liquids), or of a porous composite material such as concrete, is the ratio...

The critical positivity ratio (also known as the "Losada ratio" or the "Losada line"[not verified in body]) is a largely discredited concept in positive...

The Bennett acceptance ratio method (BAR) is an algorithm for estimating the difference in free energy between two systems (usually the systems will be...

metric tensor or its dual is considered. Strain has dimension of a length ratio, with SI base units of meter per meter (m/m). Hence strains are dimensionless...

Golden ratio base is a non-integer positional numeral system that uses the golden ratio (the irrational number 1 + 5 2 {\textstyle {\frac {1+{\sqrt {5}}}{2}}}...

In aerospace engineering, rocket mass ratio or simply mass ratio is a measure of the efficiency of a rocket. It describes how much more massive the vehicle...

Extrema Ratio is an Italian knife company. It was founded in 1997 by Maurizio Castrati and Mauro Chiostri in Prato. It is known for the design and manufacture...

(PT) – along with its derived measures of prothrombin ratio (PR) and international normalized ratio (INR) – is an assay for evaluating the extrinsic pathway...

as the ratio of the physical picture width to the physical picture height. This is known as the aspect ratio. A screen's physical aspect ratio and the...

ratio (HCR) is the population proportion that exists, or lives, below the poverty threshold. One of the undesirable features of the head count ratio is...

Loan Life Coverage Ratio (LLCR) is a ratio commonly used in project finance. The ratio is defined as: Net Present Value of Cashflow Available for Debt...

The risk–return ratio is a measure of return of investment in terms of risk for a specific time period. The percentage return (R) for the time period...

error ratio (also BER) is the number of bit errors divided by the total number of transferred bits during a studied time interval. Bit error ratio is a...

Variants include the 1–9–90 rule (sometimes 90–9–1 principle or the 89:10:1 ratio), which states that in a collaborative website such as a wiki, 90% of the...

In genetics, the Ka/Ks ratio, also known as ω or dN/dS ratio, is used to estimate the balance between neutral mutations, purifying selection and beneficial...

Power usage effectiveness (PUE) or power unit efficiency is a ratio that describes how efficiently a computer data center uses energy; specifically, how...

The analysis of line intensity ratios is an important tool to obtain information about laboratory and space plasmas. In emission spectroscopy, the intensity...

Runs per wicket ratio (RpW ratio, also called the Quotient) is a method of ranking teams in league tables in cricket who are equal on other criteria, including...

evaluating heart health takes the ratio of heart area to chest area and has been called the two-dimensional cardiothoracic ratio. Electrocardiogram: This test...

the heat capacity ratio, also known as the adiabatic index, the ratio of specific heats, or Laplace's coefficient, is the ratio of the heat capacity...

system is active. Duty cycle is commonly expressed as a percentage or a ratio. A period is the time it takes for a signal to complete an on-and-off cycle...

The mass–action ratio, often denoted by Γ {\displaystyle \Gamma } , is the ratio of the product concentrations, p, to reactant concentrations, s. The concentrations...

data compression algorithm. It compares both required time and compression ratio of measured applications, with those of a de facto standard according to...

likelihood ratio (LR+, likelihood ratio positive, likelihood ratio for positive results) and negative likelihood ratio (LR–, likelihood ratio negative,...

Peak signal-to-noise ratio (PSNR) is an engineering term for the ratio between the maximum possible power of a signal and the power of corrupting noise...

In a synchronous generator, the short circuit ratio is the ratio of field current required to produce rated armature voltage at the open circuit to the...

androgenic:anabolic ratio of an AAS is an important factor when determining the clinical application of these compounds. Compounds with a high ratio of androgenic...

film shot in a widescreen aspect ratio to standard-width video formats while preserving the film's original aspect ratio. The resulting video-graphic image...

The domain-to-range ratio (DRR) is a ratio which describes how the number of outputs corresponds to the number of inputs of a given logical function or...

This is a list of countries by trade-to-GDP ratio, i.e. the sum of exports and imports of goods and services, divided by gross domestic product, expressed...

the recessive trait in the phenotype. The genotypic ratio is 1: 2 : 1, and the phenotypic ratio is 3: 1. In the pea plant example, the capital "B" represents...

dissemination worldwide. Video systems vary in display resolution, aspect ratio, refresh rate, color reproduction, and other qualities. Both analog and...

products, so the relationship between reactants and products must form a ratio of positive integers. This means that if the amounts of the separate reactants...

radius ratio can be used to predict the crystal structure of an ionic compound based on the relative size of its atoms. It is defined as the ratio of the...

Oxygen isotope ratio cycles are cyclical variations in the ratio of the abundance of oxygen with a mass number of 18 to the abundance of oxygen with a...

Fiber volume ratio is an important mathematical element in composite engineering. Fiber volume ratio, or fiber volume fraction, is the percentage of fiber...

Standard dimension ratio (SDR) is a method of rating a pipe's durability against pressure. The standard dimension ratio describes the correlation between...

In Raman spectroscopy, the depolarization ratio is the intensity ratio between the perpendicular component and the parallel component of Raman scattered...

Return on investment (ROI) or return on costs (ROC) is the ratio between net income or profit to investment (costs resulting from an investment of some...

In radar systems, the blip-to-scan ratio, or blip/scan, is the ratio of the number of times a target appears on a radar display to the number of times...

In music, an interval ratio is a ratio of the frequencies of the pitches in a musical interval. For example, a just perfect fifth (for example C to G)...

Attenuation-to-crosstalk ratio (ACR) is a parameter that is measured when testing a communication link, which represents the overall performance of the...

the backspread is the converse strategy to the ratio spread and is also known as the reverse ratio spread. Using calls, a bullish strategy known as...

Rudder ratio refers to a value that is monitored by the computerized flight control systems in modern aircraft. The ratio relates the aircraft airspeed...

Signal to Snow Ratio is an EP by American indie rock band Grandaddy. It was released in 1999 by record label V2. Describing the EP's musical style, AllMusic's...

terminology that has been used are Leaf, Stem and Root Mass Ratios, or shoot:root or root:shoot ratios. The latter two convey less information, as they do not...

compressor at (600 °F (316 °C)) a substantial amount of oxygen (fuel/air ratio 0.014 compared to a no-oxygen-remaining value 0.0687) is still available...

The upside-potential ratio is a measure of a return of an investment asset relative to the minimal acceptable return. The measurement allows a firm or...

the likelihood ratio. In frequentist inference, the likelihood ratio is the basis for a test statistic, the so-called likelihood-ratio test. By the Neyman–Pearson...

The CEO Pay Ratio is a wage ratio. Pursuant to Section 953(b) of the Dodd-Frank Wall Street Reform and Consumer Protection Act, publicly traded companies...

small subjects and living organisms like insects. The optical reproduction ratio is the subject size captured on the film frame (or image sensor) compared...

reflect a disease's incidence. They are neither rates, incidence rates, nor ratios (none of which are limited to the range 0–1). They do not take into account...

Capital Adequacy Ratio (CAR) also known as Capital to Risk (Weighted) Assets Ratio (CRAR), is the ratio of a bank's capital to its risk-weighted assets...

value/sales is a financial ratio that compares the total value (as measured by enterprise value) of the company to its sales. The ratio is, strictly speaking...

Crown-to-root-ratio is the ratio of the length of the part of a tooth that appears above the alveolar bone versus what lies below it. It is an important...

256:135 (1.9:1) aspect ratio; for digital television, it is 3840 × 2160 (4K UHD), typically with a 16:9 (1.78:1) aspect ratio. The 4K television market...

hemispherical combustion chamber is efficient, with an excellent surface-to-volume ratio, minimal heat loss to the cylinder head,[clarification needed] and room...

In aeronautics, the thickness-to-chord ratio, sometimes simply chord ratio or thickness ratio, compares the maximum vertical thickness of a wing to its...

algorithm. The odds are a ratio of probabilities; an odds ratio is a ratio of odds, that is, a ratio of ratios of probabilities. Odds-ratios are often used in...

The phosphate/oxygen ratio, or P/O ratio, refers to the amount of ATP produced from the movement of two electrons through a defined electron transport...

parts-per notation is often used to describe small mole fractions. The mole ratio r i {\displaystyle r_{i}} is defined as the amount of a constituent n i...

A Supplementary Leverage Ratio (SLR) is a type of alternative investment, specifically a hedge, which is essentially a bet that more liquid capital requirements...

The pharmacist-to-pharmacy technician ratio is a legal regulation that establishes the maximum number of pharmacy technicians that may be supervised by...

In India, the Statutory liquidity ratio (SLR) is the Government term for the reserve requirement that commercial banks are required to maintain in the...

In climate engineering, the residue-to-product ratio (RPR) is used to calculate how much unused crop residue might be left after harvesting a particular...

The land equivalent ratio is a concept in agriculture that describes the relative land area required under sole cropping (monoculture) to produce the...

Tobin's q (or the q ratio, and Marris's v), is the ratio between a physical asset's market value and its replacement cost. It was first introduced by Robin...

Adjacent Channel Power Ratio (ACPR) is ratio between the total power of adjacent channel (intermodulation signal) to the main channel's power (useful...

Data compression ratio, also known as compression power, is a measurement of the relative reduction in size of data representation produced by a data...

parameter of a waveform, such as alternating current or sound, showing the ratio of peak values to the effective value. In other words, crest factor indicates...

The oxygen enhancement ratio (OER) or oxygen enhancement effect in radiobiology refers to the enhancement of therapeutic or detrimental effect of ionizing...

An isotopic signature (also isotopic fingerprint) is a ratio of non-radiogenic stable isotopes, stable radiogenic isotopes, or unstable radioactive isotopes...

common ratio. As a result, the common ratio will always be less than or equal to the total capital ratio. In the example above, the two ratios are the...

Signal-to-noise and distortion ratio (SNDR) is a term used for a set of measures of the quality of a signal from a communications device. These include...

slipping. The speed ratio for a pair of meshing gears can be computed from ratio of the radii of the pitch circles and the ratio of the number of teeth...

In decision tree learning, information gain ratio is a ratio of information gain to the intrinsic information. It was proposed by Ross Quinlan, to reduce...

In the consumer mortgage industry, debt-to-income ratio (DTI) is the percentage of a consumer's monthly gross income that goes toward paying debts. (Speaking...

the evolutionary biology of sexual reproduction, operational sex ratio (OSR) is the ratio of sexually competing males that are ready to mate to sexually...

golden spiral is a logarithmic spiral whose growth factor is φ, the golden ratio. That is, a golden spiral gets wider (or further from its origin) by a factor...

of 100% corresponds to a ratio bandwidth of 3:1. All higher ratios up to infinity are compressed into the range 100–200%. Ratio bandwidth is often expressed...

In telecommunications, the network effectiveness ratio (NER) measures the ability of a network to deliver a call to the called terminal. Busy signals...

In baseball statistics, strikeout-to-walk ratio (K/BB) is a measure of a pitcher's ability to control pitches, calculated as strikeouts divided by bases...

The quadrant count ratio (QCR) is a measure of the association between two quantitative variables. The QCR is not commonly used in the practice of statistics;...

Ventricular-brain ratio (VBR), also known as the ventricle-to-brain ratio or ventricle-brain ratio, is the ratio of total ventricle area to total brain...

like ceramic matrix composites (CMCs), and higher bypass and compression ratios, it was designed to improve fuel efficiency by 10% compared to the GE90...

yield-to-weight ratio is the amount of weapon yield compared to the mass of the weapon. The practical maximum yield-to-weight ratio for fusion weapons...

The therapeutic index (TI; also referred to as therapeutic ratio) is a quantitative measurement of the relative safety of a drug with regard to risk of...

Dominance Ratio is a nonverbal behavioral indicator of a person's perceived dominance over another person based on eye contact in an interaction. The ratio is...

representation was the greater concern.[citation needed] The three-fifths ratio originated with an amendment proposed to the Articles of Confederation on...

Landau–Placzek ratio is a ratio of the integrated intensity of Rayleigh scattering to the combined integrated intensity of Brillouin scattering of a triplet...

In astrophysics and physical cosmology, the mass-to-light ratio, normally designated with the Greek letter upsilon, ϒ, is the quotient between the total...

inverse ratio rule. While the three-panel Ninth Circuit agreed, on an en banc hearing, the full Ninth Circuit concurred with all but the inverse ratio rule...

In electronics, the common mode rejection ratio (CMRR) of a differential amplifier (or other device) is a metric used to quantify the ability of the device...

air-fuel ratio (AFR). At a stoichiometric air-fuel ratio, the exhaust gas temperature is different from that in a lean or rich air-fuel ratio. At rich...

Bid-To-Cover Ratio is a ratio used to measure the demand for a particular security during offerings and auctions. In general, it is used for shares, bonds...

The water–cement ratio (w/c ratio, or water-to-cement ratio, sometimes also called the Water-Cement Factor, f) is the ratio of the mass of water (w) to...

number called the common ratio. For example, the sequence 2, 6, 18, 54, ... is a geometric progression with a common ratio of 3. Similarly 10, 5, 2.5...

region or country. It is most often measured through male-to-female sex ratios, and is theorized to be caused by sex-selective abortions, female infanticide...

Ludwig Prandtl. It is defined as the ratio of momentum diffusivity to thermal diffusivity. The Prandtl number is a ratio of physical properties that may be...

ellipse in which the aspect ratio of its two semi-axes a {\displaystyle a} and b {\displaystyle b} corresponds to the golden ratio. Given is a annulus with...

The Golden Ratio is the fifth studio album by Swedish pop group Ace of Base. It was released on 24 September 2010 through Universal Music Group. Recorded...

The Pratt & Whitney JT9D engine was the first high bypass ratio jet engine to power a wide-body airliner. Its initial application was the Boeing 747-100...

the trigonometric functions relate the angles of a right triangle with ratios of its side lengths. The field emerged in the Hellenistic world during the...

The renal clearance ratio or fractional excretion is a relative measure of the speed at which a constituent of urine passes through the kidneys. It is...

The metallic mean (also metallic ratio, metallic constant, or noble mean) of a natural number n is a positive real number, denoted here S n , {\displaystyle...

four levels, or scales, of measurement: nominal, ordinal, interval, and ratio. This framework of distinguishing levels of measurement originated in psychology...

with an image aspect ratio of 2.2:1. The use of anamorphic Ultra Panavision 70 lenses squeezes an ultra-wide 2.76:1 aspect ratio horizontally into that...

In animal husbandry, feed conversion ratio (FCR) or feed conversion rate is a ratio or rate measuring of the efficiency with which the bodies of livestock...

The CSF/serum glucose ratio, also known as CSF/blood glucose ratio, is a measurement used to compare CSF glucose and blood sugar. Because many bacteria...

"Academy" ratio at 21 by 16 mm (0.83 by 0.63 in), an aspect ratio of 1.33:1. Hence when the "Academy" ratio is referred to as having an aspect ratio of 1.33:1...

The air-to-cloth ratio is the volumetric flow rate of air (m3/minute; SI m3/second) flowing through a dust collector's inlet duct divided by the total...

Image response (or more correctly, image response rejection ratio, or IMRR) is a measure of performance of a radio receiver that operates on the superheterodyne...

aspect ratio) Nordisch 570 mm × 400 mm (22 in × 16 in) (1.425 aspect ratio) Rhenish around 520 mm × 350 mm (20 in × 14 in) (1.486 aspect ratio) Swiss...

coefficient (D) is the ratio of concentrations of a compound in a mixture of two immiscible solvents at equilibrium. This ratio is therefore a comparison...

jargon used to describe a measure of the ratio of an individual's arm span relative to their height. A typical ratio is 1, as identified by the Roman writer...

systems, especially television systems, the desired-to-undesired channel ratio (D/U ratio) is a measure of the strength of the broadcast signal for a particular...

solid mass ratios are usually in the .91 to .93 range, as good as or better than most liquid-propellant upper stages. The high mass ratios possible with...

genotype ratio with the first two classes showing the (A) phenotype, and the last showing the (a) phenotype, thereby producing the 3:1 phenotype ratio. Mendel...

conversion ratio is greater than 1, it is often called the "breeding ratio". For example, commonly used light water reactors have a conversion ratio of approximately...

In chemistry and biology, the dilution ratio and dilution factor are two related (but slightly different) expressions of the change in concentration of...

monotonic likelihood ratio in distributions   f ( x )   {\displaystyle \ f(x)\ } and   g ( x )   {\displaystyle \ g(x)\ } The ratio of the density functions...

Kill Ratio is a 2016 American action-thriller film directed by Paul Tanter. It stars Tom Hopper, Amy Huberman, Nick Dunning, Lacy Moore, Luke Pierucci...

that allow polynomial-time approximation algorithms with approximation ratio bounded by a constant (or constant-factor approximation algorithms for short)...

phase bears the ratio of a small whole number to their interatomic distance in solution. Henry's law follows as a consequence if this ratio is a constant...

probability of sovereign debt rescheduling are: Debt service ratio Import ratio Investment ratio Variance of export revenue Domestic money supply growth GDP...

The stocks-to-use ratio (S/U) is a convenient measure of supply and demand interrelationships of commodities. This ratio indicates the level of carryover...

Dynamic range (abbreviated DR, DNR, or DYR) is the ratio between the largest and smallest measurable values of a specific quantity. It is often used in...

The distribution constant (or partition ratio) (KD) is the equilibrium constant for the distribution of an analyte in two immiscible solvents. In chromatography...

theatrical release and then scanning the film without a matte (at Academy ratio) for a full screen home video release, thus not only providing a much better...

The social earnings ratio, sometimes abbreviated to S/E, is a single-number metric, used to measure the social impact of various organizations. The non-financial...

their estimated male to female income ratio according to the Gender Development Index of the United Nations. The ratio is determined by comparing the gross...

The process capability index, or process capability ratio, is a statistical measure of process capability: the ability of an engineering process to produce...

air and water vapour per unit mass of dry air. The psychrometric ratio is the ratio of the heat transfer coefficient to the product of mass transfer coefficient...

The last alteration to the current flag occurred in 2004, when the aspect ratio changed from 1:2 to 3:5. The earliest known flags with a Lithuanian identity...

The Incremental Capital-Output Ratio (ICOR) is the ratio of investment to growth which is equal to the reciprocal of the marginal product of capital....

low odds ratios. For instance, for an odds ratio of 1.5 and cases = controls, the table shown above would look like this: For an odds ratio of 1.1: Cohort...

Times interest earned (TIE) or interest coverage ratio is a measure of a company's ability to honor its debt payments. It may be calculated as either...

The Koenigsberger ratio is the proportion of remanent magnetization relative to induced magnetization in natural rocks. It was first described by J.G...

16-valve Bore x Stroke : 80.5 mm × 78.5 mm (3.17 in × 3.09 in) Compression Ratio : 10.2:1 Applications Toyota Auris (ZRE151) (Europe only) Toyota Corolla...

Lankford coefficient (also called Lankford value, R-value, or plastic strain ratio) is a measure of the plastic anisotropy of a rolled sheet metal. This scalar...

Contrast-to-noise ratio (CNR) is a measure used to determine image quality. CNR is similar to the metric signal-to-noise ratio (SNR), but subtracts a term...

classes side with. The carbon Palma ratio, which is derived from the income Palma ratio and described as the ratio of the total emissions of the top 10%...

The sequential probability ratio test (SPRT) is a specific sequential hypothesis test, developed by Abraham Wald and later proven to be optimal by Wald...

The urea reduction ratio (URR) is a dimensionless number used to quantify dialysis treatment adequacy. U R R = U p r e − U p o s t U p r e × 100 % {\displaystyle...

The 84,200–97,000 lbf (375–431 kN) engine has a 9.6:1 bypass ratio and a 50:1 pressure ratio. It is the most powerful member of the Trent family. By 2004...

In real estate investing, the cash-on-cash return is the ratio of annual before-tax cash flow to the total amount of cash invested, expressed as a percentage...

The information–action ratio is a concept coined by cultural critic Neil Postman in his work Amusing Ourselves to Death. In short, Postman meant to indicate...

The transpiration ratio is the ratio of the mass of water transpired to the mass of dry matter produced; the transpiration ratio of crops tends to fall...

isotope ratios to reconstruct historical atmospheric temperatures, making them important tools for paleoclimatology. Example of common isotope ratios analyzed...

Fisher's principle is an evolutionary model that explains why the sex ratio of most species that produce offspring through sexual reproduction is approximately...

particle physics and nuclear physics, the branching fraction (or branching ratio) for a decay is the fraction of particles which decay by an individual decay...

In statistics, when performing multiple comparisons, a false positive ratio (also known as fall-out or false alarm rate ) is the probability of falsely...

The displacement–length ratio (DLR or D/L ratio) is a calculation used to express how heavy a boat is relative to its waterline length. DLR was first...

new liquidity requirements: the net stable funding ratio (NSFR) and the liquidity coverage ratio (LCR). On October 31, 2014, the Basel Committee on Banking...

cost ratio from Kou et al. A series of papers provided approximation algorithms for the minimum Steiner tree problem with approximation ratios that improved...

also sometimes called energy returned on energy invested (ERoEI), is the ratio of the amount of usable energy (the exergy) delivered from a particular...

the discography of English post-punk band A Certain Ratio. Since forming in 1977, A Certain Ratio have released 13 studio albums; the first in 1980 with...

not physical size, of something. This enlargement is quantified by a size ratio called optical magnification. When this number is less than one, it refers...

Signal-to-noise ratio (SNR) is used in imaging to characterize image quality. The sensitivity of a (digital or film) imaging system is typically described...

A parity progression ratios (PPR) is a measure commonly used in demography to study fertility. The PPR is simply the proportion of women with a certain...

mass-to-charge ratio of ions. The results are presented as a mass spectrum, a plot of intensity as a function of the mass-to-charge ratio. These spectra...

The Ratio Utility Billing System (RUBS) describes any method used to determine the amount of a fee which is labeled to represent a landlord's business...

similar, but not identical, results. The more general definition is the ratio of the initial energy stored in the resonator to the energy lost in one...

consumption and reduced wear and noise level. The term is ambiguous. The gear ratio between engine and wheels causes the vehicle to be over-geared, and cannot...

diesel engines is that petrol engines typically have a lower compression ratio. The first practical petrol engine was built in 1876 in Germany by Nicolaus...

gear, large gear wheels are advantageous for durability. As the very high ratio 1st gear is formed exclusively by gearset 4, its sun gear is unusually small...

gear and, therefore, the gear ratio is fixed, but most modern bicycles have multiple gears and thus multiple gear ratios. A shifting mechanism allows selection...

equals the ratio of the cost of the preventative measure to the loss averted, and this threshold is termed the cost/loss ratio or cost-loss ratio. The model...

the sex ratio at birth and the population sex ratio are remarkably constant in human populations. Significant deviations in birth sex ratios from the...

The ratio of the distance forwards to downwards is called the glide ratio. The glide ratio (E) is numerically equal to the lift-to-drag ratio under...

omega−6 fats and omega−3 fats are typically consumed in roughly a 1:1 ratio.[better source needed] At one extreme of the spectrum of hunter-gatherer...

type of turbochargers, usually designed to allow the effective aspect ratio (A/R ratio) of the turbocharger to be altered as conditions change. This is done...

between CS and US. They use the suppression ratio to quantify this strength.[citation needed] The suppression ratio equals the number of responses made during...

The tip-speed ratio, λ, or TSR for wind turbines is the ratio between the tangential speed of the tip of a blade and the actual speed of the wind, v....

The signal-to-crosstalk ratio at a specified point in a circuit is the ratio of the power of the wanted signal to the power of the unwanted signal from...

influence on each other, usually because their orbital periods are related by a ratio of small integers. Most commonly, this relationship is found between a pair...

computing, a clock multiplier (also known as a CPU multiplier or bus/core ratio) determines how many times faster the processor’s internal clock runs compared...

Gear ratios: Drive and Driven sprocket combinations and ratios 33 Drive / 37 Driven creates a 0.892:1 ratio 35 Drive / 35 Drive creates a 1.000:1 ratio 37...

airflow of 1,300 lb/s (590 kg/s), resulting in a bypass ratio of 5.72. The overall pressure ratio is 24.3. The engine develops a maximum static take-off...

usual for some natural gas to come out of solution. The gas/oil ratio (GOR) is the ratio of the volume of gas ("scf") that comes out of solution to the...

needed] The display ratio for broadcast widescreen is commonly 16:9 (pixel aspect ratio of 40:33 for anamorphic); the display ratio for a traditional or...

(pressure ratios of 1.15–1.6) at design conditions with a polytropic efficiency in the region of 90–95%. To achieve different pressure ratios, axial compressors...

In an electrical grid, the short circuit ratio (or SCR) is the ratio of: the short circuit apparent power (SCMVA) in the case of a line-line-line-ground...

another national flag), and the overall shape of a flag, such as the aspect ratio of a rectangular flag—whether the flag is square or rectangle, and how wide...

Fides et ratio (Latin for 'Faith and Reason') is an encyclical promoted by Pope John Paul II on 14 September 1998. It was one of 14 encyclicals issued...

captures widescreen images using recording media with narrower native aspect ratios. Originally developed for 35 mm film to create widescreen presentations...

portfolio investment plan where a simple variable ratio is used for rebalancing investments. The constant ratio plan was one of the first plans devised when...

modifying agents, and special flavorings and coloring agents; and its 1:2:8 ratio (1 part sweet, 2 parts sour, 8 parts base) for sour type cocktails. Embury...

The price/cash flow ratio (also called price-to-cash flow ratio or P/CF), is a financial ratio used to compare a company's market value to its cash flow...

Urine protein/creatinine ratio is a widely used initial method to estimate daily protein excretion in urine. Since the diagnosis and management of proteinuric...

five horizontal bands of blue, white, red, white, and blue, in a 6:1:1:1:3 ratio. A circle of ten yellow five-pointed stars – representing the ten islands...

In mathematics, the tribonacci ratio is a geometrical proportion, given by the unique real solution of the equation x3 = x2 + x + 1. Its decimal expansion...

resistance levels. It is named after the Fibonacci sequence of numbers, whose ratios provide price levels to which markets tend to retrace a portion of a move...

harmonic motion. The appearance of the figure is sensitive to the ratio ⁠a/b⁠. For a ratio of 1, when the frequencies match a=b, the figure is an ellipse...

depends on the direction of current relative to the magnetic field. In a ratio meter, therefore, it follows that the force produced by one coil will always...

with a frequency ratio equal to a power of two divided by a power of three, or vice versa. For instance, the perfect fifth with ratio 3/2 (equivalent to...

imaging, the two-dimensional spectral signal-to-noise ratio (SSNR) is a signal-to-noise ratio measure which measures the normalised cross-correlation...

damping ratio of an underdamped system in the time domain. The method of logarithmic decrement becomes less and less precise as the damping ratio increases...

/ˈfaɪɡənbaʊm/ δ and α are two mathematical constants which both express ratios in a bifurcation diagram for a non-linear map. They are named after the...

implemented some computer functionality. Since 2010, the typical display aspect ratio of both televisions and computer monitors changed from 4:3 to 16:9 Modern...

clearly definable in several listed parameters (e. g., film gauge, aspect ratio, etc.). Format is the name of the process; some formats may have multiple...

pages and printed area were based on the golden ratio (commonly approximated as the decimal 0.618 or the ratio 5:8). He quotes the dimensions of Gutenberg's...

tuned so that their frequencies form ratios of relatively small integers. For example, in the key of C major, the ratio of the frequencies of the notes C...

part of a division (in the case of Euclidean division) or a fraction or ratio (in the case of a general division). For example, when dividing 20 (the...

or Horovitz index (also known as the Horowitz quotient or the P/F ratio) is a ratio used to assess lung function in patients, particularly those on ventilators...

dwarfs. The gas giant planets display the primordial ratio of deuterium. Comets show an elevated ratio similar to Earth's oceans (156 deuterium nuclei per...

directly proportional if their corresponding elements have a constant ratio. The ratio is called coefficient of proportionality (or proportionality constant)...

The modulation error ratio (MER) is a measure used to quantify the performance of a digital radio (or digital TV) transmitter or receiver in a communications...

asset turnover (ATO), total asset turnover, or asset turns is a financial ratio that measures the efficiency of a company's use of its assets in generating...

Sextet is the third studio album by the English post-punk band A Certain Ratio, released in January 1982 by Factory Records. It is the first album by the...

Employment rate, also called the employment-to-population ratio, is a statistical ratio that measures the proportion of a country's working age population...

The total expense ratio (TER) is a measure of the total cost of a fund to an investor. Total costs may include various fees (purchase, redemption, auditing)...

furnace, refrigerator, ACs etc. For a heat engine, thermal efficiency is the ratio of the net work output to the heat input; in the case of a heat pump, thermal...

The FEV1/FVC ratio, also called modified Tiffeneau-Pinelli index, is a calculated ratio used in the diagnosis of obstructive and restrictive lung disease...

aspect ratio (480 × 4⁄3 = 640) or a horizontal resolution of 854 (848 should be used for mod16 compatibility) pixels for an approximate 16:9 aspect ratio (480 × 16⁄9...

is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions. It is transparent or translucent, brittle,...

divider circuit used to generate an output voltage as a highly accurate ratio of an input voltage, with selectable resolution over several decades. The...

first electric power variable gear ratio steering (VGS) system. In 2002, Toyota introduced the "Variable Gear Ratio Steering" (VGRS) system on the Lexus...

numbers are those that cannot be expressed as the ratio of two integers. Geometrically, when the ratio of lengths of two line segments is an irrational...

Category performance ratio refers to the relative performance of a retailer in a given product category, compared with its performance in all product...

example in the signal-to-noise ratio (SNR), signal-to-interference ratio (SIR) and signal-to-noise plus interference ratio (SNIR) measures. Noise is also...

only, and takes the age distribution into account. Child-Woman Ratio (CWR) - the ratio of the number of children under 5 to the number of women 15–49...

version is an inline 4-cylinder engine that carries a 10.5:1 compression ratio; the engine makes 133–138 PS (98–101 kW; 131–136 hp) at 6,000–6,200 rpm...

level and choice of units indicate the scaling of the logarithm of the ratio between the quantity and its reference value, though a logarithm may be...

Shale Gouge Ratio (typically abbreviated to SGR) is a mathematical algorithm for predicting the fault rock types for simple fault zones developed in sedimentary...

(SOHC), compression ratio: 10.3:1 12v: four valves per cylinder, 12 valves total, double overhead camshafts (DOHC), compression ratio: 10.5:1 aspiration...

The sex ratio of the different administrative divisions of China has been the subject of academic study because of a high imbalance in births since the...

In electronics, excess noise ratio is a characteristic of a noise generator such as a "noise diode", that is used to measure the noise performance of...

percent, or per cent (from Latin per centum 'by a hundred') is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign...

number, or basic reproductive number (sometimes called basic reproduction ratio or basic reproductive rate), denoted R 0 {\displaystyle R_{0}} (pronounced...

CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of the useful heating or cooling provided to the work (energy) required...