Suppose we select 20 observations from each of five treatments. The appropriate degrees of freedom are:
A) 4 and 95
B) 5 and 20
C) 4 and 19
D) 4 and 20

Question

Quizplus · Accepted Answer

The degrees of freedom for treatments (between groups) is calculated as the number of treatments minus one, which is 5 - 1 = 4. The degrees of freedom for error (within groups) is calculated as the total number of observations minus the number of treatments, which is (20*5) - 5 = 100 - 5 = 95.

Suppose We Select 20 Observations from Each of Five Treatments