| http://www.w3.org/ns/prov#value | - Regression to the mean is a problem only when there is substantial noise in your dependent variable and you subdivide your subjects into groups that differ in their mean scores in one of the tests.??? Using the best test available is one way to reduce the effect of noise, but that will not reduce noise represented by real random changes in the subjects over the period between the tests.???Of course,
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