An ANOVA procedure is used for data that was obtained from five sample groups each comprised of six observations. The degrees of freedom for the critical value of F are
A) 5 and 30.
B) 4 and 25.
C) 4 and 30.
D) 4 and 6.

Question

Quizplus · Accepted Answer

The degrees of freedom for the critical value of F in an ANOVA are calculated as follows: For the numerator (between groups), it's the number of groups minus one, which is 5 - 1 = 4. For the denominator (within groups), it's the total number of observations minus the number of groups, which is (5*6) - 5 = 30 - 5 = 25.

An ANOVA Procedure Is Used for Data That Was Obtained