In a two-variable experiment,
A) if the main effects are significant, then there cannot be a significant interaction.
B) if the interaction is significant, then there cannot be significant main effects.
C) if one main effect is significant, then the other main effect cannot be significant.
D) any combination of main effects and interactions is possible.

Question

Quizplus · Accepted Answer

In a two-variable experiment, it is possible to have any combination of significant main effects and interactions. Main effects and interactions are independent of each other, so significant interactions can occur with or without significant main effects, and vice versa.

In a Two-Variable Experiment