After calculating the between-group sum of squares and the within-group sum of squares,the next step is to calculate the mean square between and the mean square within.This is achieved by
A)calculating the average group mean.
B)multiplying the between-group sum of squares and the within-group sum of squares.
C)adding the between-group sum of squares and the within-group sum of squares.
D)dividing each sum of squares by its respective degrees of freedom.

Question

Quizplus · Accepted Answer

To calculate the mean square between and the mean square within, we need to divide the corresponding sums of squares by their respective degrees of freedom. This involves dividing the between-group sum of squares by the number of groups or treatment levels minus one (df between = k-1) and dividing the within-group sum of squares by the total number of observations minus the number of groups or treatment levels (df within = N-k). Therefore, option D is the correct choice.

After Calculating the Between-Group Sum of Squares and the Within-Group