It is helpful to represent the main effects and interactions of a factorial ANOVA graphically in a bar graph because when lines are drawn to connect the bars, they will be _____ if there is a main effect and _____ if there is an interaction.
A) separate but parallel; flat
B) separate but parallel; intersecting
C) intersecting; flat
D) flat and parallel; intersecting

Question

Quizplus · Accepted Answer

In a bar graph, if there is a main effect, the bars will be separate but parallel. If there is an interaction, the bars will intersect. Therefore, the best choice is B, where the bars are separate but parallel for main effects and intersecting for interactions.

It Is Helpful to Represent the Main Effects and Interactions