If a researcher reported an F-ratio with df = 3, 30 for a repeated measures ANOVA, then there were _____ conditions in the experiment and _____ total subjects.
A) 4; 10
B) 4; 11
C) 3; 10
D) 3; 11

Question

Quizplus · Accepted Answer

The degrees of freedom for conditions (df between) is 3, indicating 4 conditions (df + 1). The degrees of freedom for subjects (df within) is 30, which is calculated as (number of subjects - 1) * (number of conditions - 1). Solving for the number of subjects gives 11.

If a Researcher Reported an F-Ratio with Df = 3