The ______ of the formula for the F-ratio concerns ______ and involves group ______.

A) denominator; differences within groups; means
B) numerator; differences within groups; standard deviations
C) denominator; differences between groups; standard deviations
D) numerator; differences between groups; means

F-ratio

The ratio of variance between groups to the variance within groups in an ANOVA test, used to determine if there are any significant differences between group means.

Denominator

The bottom part of a fraction that indicates into how many parts the whole is divided.

Numerator

The top number in a fraction that shows how many parts of a whole are being considered or used.