Which of the following is (are) assumption(s) underlying the use of the F test?
A) the raw score populations are normally distributed
B) the variances of the raw score populations are the same
C) the mean of the populations differ
D) the raw score populations are normally distributed and the variances of the raw score populations are the same
E) all of these

Question

Quizplus · Accepted Answer

The F test assumes that the raw score populations are normally distributed and that their variances are equal, but it does not assume that the means of the populations differ (although the test is often used to determine if they do). Therefore, the correct choice is D, which includes both assumptions about normality and equal variances.

Which of the Following Is (Are) Assumption(s) Underlying the Use