Which of the following CANNOT be said of the interaction in a study?
A) It can be determined by examining a graph of the results.
B) It can be determined by investigating marginal means.
C) It can exist even if the main effects are not significant.
D) It is almost always more important than a study's main effects.
E) There are multiple types of interactions (e.g., crossover interaction).

Question

Quizplus · Accepted Answer

Investigating marginal means typically helps in understanding main effects, not interactions. Interactions are better understood through graphical analysis or statistical tests.

Which of the Following CANNOT Be Said of the Interaction