In a two-factor fixed-effects ANOVA, the interaction effect is definitely not present when
A) The effect of one factor is different across levels of the other factor.
B) Column effects are not consistent across rows.
C) Main effects and residual error do not account for all of the variation in
The dependent variable.
D) Main effects and residual error have accounted for all of the variation in
The dependent variable.

Question

Quizplus · Accepted Answer

The interaction effect in a two-factor fixed-effects ANOVA is absent when the main effects (of the two factors) and the residual error together account for all the variation in the dependent variable. This means that there is no additional variation explained by the interaction between the two factors, as indicated in choice D.

In a Two-Factor Fixed-Effects ANOVA, the Interaction Effect Is Definitely