Colette received an unusually high grade of A on her first biology test and a B+ on the second,even though she studied equally for both tests.Which of the following best explains Colette's deteriorating pattern of performance?
A) illusory correlation
B) the illusion of control
C) the random sampling effect
D) regression toward the mean

Question

Quizplus · Accepted Answer

Regression toward the mean suggests that extreme scores will tend to move closer to the average score on subsequent tests. Colette's high grade on the first test was likely an extreme score and her B+ on the second test was closer to the average.

Colette Received an Unusually High Grade of a on Her