In a repeated measures t test, difference values are determined by
A) subtracting post-test scores from pre-test scores.
B) subtracting pre-test scores from post-test scores.
C) squaring the post-test scores.
D) squaring the pre-test scores.

Question

Quizplus · Accepted Answer

In a repeated measures t test, we are interested in the difference between the pre-test and post-test scores. Therefore, the difference values are determined by subtracting pre-test scores from post-test scores. Option A is the reverse order, which would give negative values. Squaring the scores (options C and D) is not necessary for a standard repeated measures t test.

In a Repeated Measures T Test, Difference Values Are Determined