A researcher conducts a one-way ANOVA comparing four groups, each of which consists of 20 participants (N = 20). In evaluating the F-ratio for this analysis, what is the critical value for α = .05?
A) 2.76
B) 2.70
C) 2.53
D) 2.46

Question

Quizplus · Accepted Answer

The critical value for an F-ratio in a one-way ANOVA depends on the degrees of freedom for the numerator (df between) and the denominator (df within). For four groups each with 20 participants, df between = 4 - 1 = 3 and df within = 80 - 4 = 76. Consulting an F-distribution table for α = .05 with these degrees of freedom, the closest critical value is 2.76.

A Researcher Conducts a One-Way ANOVA Comparing Four Groups, Each