A repeated-measures research study uses n = 8 subjects.If the within-treatment df for the ANOVA is 21,what is the value for the error df?
A)7
B)13
C)14
D)18

Question

A repeated-measures research study uses n = 8 subjects.If the within-treatment df for the ANOVA is 21,what is the value for the error df?​
A)​7
B)​13
C)​14
D)​18

Quizplus · Accepted Answer

The error degrees of freedom (df) in a repeated-measures ANOVA can be calculated using the formula: error df = within-treatment df - (n - 1), where n is the number of subjects. Given n = 8 and within-treatment df = 21, error df = 21 - (8 - 1) = 21 - 7 = 14.

A Repeated-Measures Research Study Uses N = 8 Subjects