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Regression toward the mean

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Regression toward the mean
The tendency that a random variable will ultimately have a value closer to its mean value.


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After 60 years, the movement has succumbed to bureaucratic inertia and regression toward the mean.
Mlodinow provides lessons on what he calls "a field of subtlety," from the basic laws of probability, to regression toward the mean and availability bias.
Although a complete discussion of regression artifacts is not practical here, it should be mentioned that whenever extreme scores are used on an instrument for classification purposes, there should be large amounts of regression toward the mean when a second test is given (Campbell & Kenny, 1999).
 
 
 
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