If the null hypothesis is true for a one-factor within-subjects analysis of variance, then Fobs should be.
A)either positive or negative depending on the direction of differences among the means
B)approximately zero
C)approximately 1.00
D)greater than 1.00

Question

Quizplus · Accepted Answer

The F-ratio in an analysis of variance (ANOVA) is calculated as the ratio of the variance between groups to the variance within groups. If the null hypothesis is true (meaning there are no real differences among the group means), the expected value of the F-ratio is approximately 1.00. This is because both the numerator and the denominator are estimating the same quantity (the variance of the population), leading to a ratio close to 1.

If the Null Hypothesis Is True for a One-Factor Within-Subjects