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The content of Seasonal variation was merged into Seasonality on November 30, 2011. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. For the discussion at that location, see its talk page.

I have posted a seasonality definition on Lokad.com. See http://www.lokad.com/definition-seasonality.ashx In particular, the article is illustrated with real-world seasonal time-series taken from retail. Those illustrations might be of interest to the readers. --Joannes Vermorel (talk) 16:47, 6 September 2011 (UTC)Reply

Dr. Hyndman has reviewed this Wikipedia page, and provided us with the following comments to improve its quality:

* Not clear that "seasonality", "seasonal variation", "periodic variation", and "periodic fluctuations" are synonyms here.

• Missing reference on seasonal plot.
• The seasonal index is not a graphical technique. Delete this dot point.
• Second last para in "Detecting seasonality" should be deleted as erroneous and misleading.
• Reference formating needs fixing.

We hope Wikipedians on this talk page can take advantage of these comments and improve the quality of the article accordingly.

Dr. Hyndman has published scholarly research which seems to be relevant to this Wikipedia article:

• Reference : Alysha M De Livera & Rob J Hyndman, 2009. "Forecasting time series with complex seasonal patterns using exponential smoothing," Monash Econometrics and Business Statistics Working Papers 15/09, Monash University, Department of Econometrics and Business Statistics.

ExpertIdeasBot (talk) 11:13, 1 June 2016 (UTC)Reply

Dr. Hyndman is wonderful here, and may not even be (often) consciously aware of the simple, abstract "binary oppositional" exploits of those elements of society who want to push seasonality itself, to a stark extreme in order to have a monopoly on the collective consciousness regarding matters of unwavering binarist ideology. This is why multifactorial thinking, which by its eminently more complex nature tends to be "de-seasonalizing," is a must in order to keep proper paradigmatic discourse in a position of power -over- seasonality and the gross oversimplifications that can unfortunately result from it. Cheers. Excellent talk page too!!