Statistical Analysis Stack Exchange
Statistical Analysis Stack Exchange

Questions tagged [regression-to-the-mean]

The phenomenon that on repeated testing a high value tends to be lower, and a low value higher.

There is an extensive set of examples and explanations in the Wikipedia article https://en.wikipedia.org/wiki/Regression_toward_the_mean. The concept originates with Galton in genetics but arises on many fields of application.

24 questions
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Variance of data from small versus large countries

In considering (for example) homicide rates reported annually for each country, it occurs to me that the U.S., being larger in population, might thereby be expected to have a rate closer to the worldwide mean. However, I don't know how to evaluate…
Ralph Dratman
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How to adjust estimates to account for regression to the mean?

Let us consider an example where we have a number of runners and an estimate of speed in mph for each runner. The estimate for each runner may be based on an equal or unequal number of independent and identical experiments where that runner is timed…
Ryan Volpi
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Can regression to the mean cause this?

Let's say I have two independent samples (DS and VS). My data is also highly multivariate (e.g. one dependent variable, 300+ potential predictors, N<300). To reduce the dimensionality of this problem I decided to aggregate the effect of my 300+…
aciM
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