In which of the following models can interaction in an experimental design be tested?
A) a completely randomized model
B) a randomized block model
C) a two-factor model
D) all ANOVA models

Question

Quizplus · Accepted Answer

Interaction can only be tested in a two-factor model, where there are two independent variables being manipulated. The other models (completely randomized and randomized block) only have one independent variable and therefore cannot test for interaction. While all ANOVA models technically allow for interaction testing, the only one that specifically includes two independent variables is the two-factor model.

In Which of the Following Models Can Interaction in an Experimental