When baseball's rookie-of-the-year has a more ordinary second year,we should not be surprised.This fact is easily explained by

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Regression toward the average. This phenomenon occurs because the rookie-of-the-year likely had an exceptional first year, but it is unlikely that they will continue to perform at that level in their second year. Thus, their performance will regress (or move) closer to their average level of performance over time.

When Baseball's Rookie-Of-The-Year Has a More Ordinary Second Year,we Should