In a 2 x 2 factorial design, when a main effect is significant…
A) the other main effect should also be significant.
B) the other main effect need not be significant.
C) the interaction should be significant only if the other main effect is also significant.
D) the interaction should not be significant if the other main effect is significant.

Question

Quizplus · Accepted Answer

In a 2 x 2 factorial design, a significant main effect means that one of the independent variables has a statistically significant effect on the dependent variable, regardless of the levels of the other independent variable. Therefore, the other main effect need not be significant. However, it is still possible for the interaction effect to be either significant or not significant.

In a 2 X 2 Factorial Design, When a Main