A researcher uses an ANOVA to compare five treatment conditions with a sample size of n = 10 in each treatment. For this analysis find the degrees of freedom.

What is df(treatment)?
This author refers to this as the “numerator degrees of freedom.”

What is df(error)?
The author refers to this as the “denominator degrees of freedom.”

If the scenario was changed so that there were still five treatments, but there were different sample sizes for each treatment (a.k.a. an unbalanaced design), which of the following degrees of freedom would NOT change?