In a factorial design, when you add a level to one of your independent variables, you add ___ group(s) to your experiment.
A) zero
B) one
C) two or more
D) exactly two

Question

Quizplus · Accepted Answer

In a factorial design, adding a level to one independent variable increases the number of groups by multiplying the number of levels of all other independent variables, thus adding two or more groups depending on the number of other variables and their levels.

In a Factorial Design, When You Add a Level to One