If the interaction between two factors is not significant, the next tests to be done are ________.
A) none, the analysis is complete
B) none, gather more data
C) tests about the population means of factor A or factor B using two-way ANOVA without interaction
D) Tukey's confidence intervals

Question

Quizplus · Accepted Answer

If the interaction between two factors is not significant, it suggests that the effect of one factor on the outcome variable does not depend on the level of the other factor. In this situation, it makes sense to conduct tests about the population means of factor A or factor B using two-way ANOVA without interaction to see if there is a main effect of either factor A or factor B on the outcome variable. This will help to determine whether either factor has a significant overall effect on the outcome variable, which can be useful for interpreting the results of the study. Tukey's confidence intervals may be applicable, but they are not necessarily the next most appropriate test to conduct.

If the Interaction Between Two Factors Is Not Significant, the Next