In the graphic plot of an interaction in factorial ANOVA, parallel lines indicate
A)a significant interaction
B)a nonsignificant interaction
C)two significant main effects and a significant interaction
D)two nonsignificant main effects and a nonsignificant interaction

Question

Quizplus · Accepted Answer

Parallel lines in the plot of an interaction in factorial ANOVA suggest that there is no interaction effect between the factors, indicating a nonsignificant interaction. This is because the effect of one factor is consistent at all levels of the other factor, hence the lines do not cross or interact.

In the Graphic Plot of an Interaction in Factorial ANOVA