If a treatment effect exists
A) variability between groups will tend to exceed variability within groups
B) variability within groups will tend to exceed variability between groups
C) variability between groups and within groups will tend to be about the same
D) total variability will tend to exceed variability between groups and within groups

Question

Quizplus · Accepted Answer

When a treatment effect exists, it causes differences between the groups, leading to greater variability between groups compared to the variability within each group.

If a Treatment Effect Exists