Question

In a 2 X 2 X 2 factorial design, one might potentially find a pattern of results with

a. as many interactions as there are factors.
b. as many main effects as there are factors.
c. three main effects and two interactions.
d. all of the above

Answer 1

The correct answer is c. In a 2 X 2 X 2 factorial design, there are three main effects (one for each factor) and two two-way interactions (one for each pair of factors). Therefore, there can be a pattern of results with three main effects and two interactions.