An ANOVA procedure is used for data obtained from five populations. Five samples, each comprised of 25 observations, were taken from the five populations. The numerator and denominator (respectively) degrees of freedom for the critical value of F are
A) 5 and 25.
B) 4 and 25.
C) 4 and 124.
D) 4 and 120.

Question

Quizplus · Accepted Answer

The degrees of freedom for the numerator (between groups) is calculated as the number of groups minus one, which is 5 - 1 = 4. The degrees of freedom for the denominator (within groups) is calculated as the total number of observations minus the number of groups, which is (5*25) - 5 = 125 - 5 = 120.

An ANOVA Procedure Is Used for Data Obtained from Five