Posted by **Robbie** on Thursday, November 15, 2012 at 3:40am.

A researcher uses an analysis of variance to test for mean differences among three

treatment conditions using a sample of n = 8 participants in each treatment. What degrees of

freedom (df) would the F-ratio from this analysis have?

a. df = 23

b. df = 2, 23

c. df = 3, 21

d. df = 2, 21