Which of the following is true regarding regression toward the mean?
A) when two sets of scores are imperfectly correlated, high scores in the first set will inevitably be lower in the second set
B) it is an inevitable consequence of examining the association between scores on two imperfectly related measures
C) it is a particular problem whenever at least one set of scores is selected for its extremity.
D) A and B
E) B and C
F) all of the above

Question

Quizplus · Accepted Answer

Regression toward the mean is a statistical phenomenon that occurs when there is imperfect correlation between two sets of scores. It means that extreme scores in one set are likely to be less extreme when measured again. This is true regardless of whether the scores are high or low. Thus, statement A is not entirely accurate as it only refers to high scores in the first set. Statement B is partially accurate as regression toward the mean is not an inevitable consequence, but it is a statistical property. Statement C is also partially accurate as regression toward the mean is a problem whenever extreme scores are selected, whether they are high or low. Therefore, the best answer is E, as it accurately captures the limitations and properties of regression toward the mean.

Which of the Following Is True Regarding Regression Toward the Mean