In a study with four groups and 10 participants in each group,the sum of squares for the between-groups source of variation is 60.What is the value for the mean square between groups in this study?
A) 10
B) 15
C) 20
D) 1.67

Question

Quizplus · Accepted Answer

The mean square between groups is calculated by dividing the sum of squares between groups by the degrees of freedom between groups. In this case, the degrees of freedom between groups is 4 - 1 = 3. Therefore, the mean square between groups is 60 / 3 = 20.

In a Study with Four Groups and 10 Participants in Each