If the interaction effect is significant in a two-way ANOVA,then it is best to examine main effects by looking at _____.
A)profile plots of the group means
B)plots of the standard deviations
C)histograms of the dependent variable
D)Q-Q plots of the group means

Question

Quizplus · Accepted Answer

If the interaction effect is significant in a two-way ANOVA, it indicates that the effect of one independent variable on the dependent variable depends on the level of the other independent variable. Therefore, it is important to examine main effects by looking at profile plots of the group means. These plots allow us to see the main effects of each independent variable and how they interact with each other. Plotting standard deviations, histograms, or Q-Q plots would not provide information about the main effects.

If the Interaction Effect Is Significant in a Two-Way ANOVA,then