Dr. Gavin is conducting a 2 × 4 independent-groups factorial design. How many main effects will Dr. Gavin need to examine?
A)2
B)3
C)4
D)6

Question

Quizplus · Accepted Answer

In a 2 × 4 factorial design, there are two independent variables: one with 2 levels and the other with 4 levels. The number of main effects corresponds to the number of independent variables, which in this case is 2 (one for each variable).

Dr Gavin Is Conducting a 2 × 4 Independent-Groups Factorial