Suppose we have five independent groups or samples each of s

Suppose we have five independent groups (or samples), each of size 9. How many degrees of freedom do we have for the between groups sum of squares in the ANOVA?

A) 4

B) 40

C) 44

D) 45

Solution

Five independent groups (or samples), each of size 9. Thus, the degrees of freedom the between groups sum of squares in the ANOVA is number of groups

=5-1

=4