For which of the three F-tests in a two-way ANOVA do you collapse across the levels of the other factor(s)in computing the means?
A)The A main effect
B)The B main effect
C)The interaction effect
D)Both the A main effect and the B main effect

Question

Quizplus · Accepted Answer

In computing the means for the A main effect and the B main effect, we collapse across the levels of the other factor. The interaction effect cannot be collapsed as it is the effect of the combination of both factors. Therefore, choices A and B are incorrect, and choice C is incomplete as it does not specify which factor is collapsed. The correct answer is D, as both the A main effect and the B main effect require collapsing across the levels of the other factor(s) to compute the means.

For Which of the Three F-Tests in a Two-Way ANOVA