When interpreting F₍₂, ₂₇₎ = 8.80, p

Question

When interpreting F₍₂, ₂₇₎ = 8.80, p < .05, how many groups were examined?
A)30
B)27
C)3
D)2

Quizplus · Accepted Answer

F represents the ratio of variance between groups to variance within groups. The first number in the subscript refers to the degrees of freedom for the numerator (between groups) and the second number refers to the degrees of freedom for the denominator (within groups). In this case, F has a subscript of 2, 27, which means there were 3 groups (2 and 27 degrees of freedom for between and within groups, respectively).

When Interpreting F₍₂, ₂₇₎ = 8