A researcher reports the results of an ANOVA for a repeated-measures study as "F(2,12)= 7.84,p

Question

A researcher reports the results of an ANOVA for a repeated-measures study as "F(2,12)= 7.84,p < .01." This study used a sample of n = 13 participants.

Quizplus · Accepted Answer

The degrees of freedom in the F-statistic indicate that there were three levels of the repeated-measures factor (2+1=3) and 13 participants (n=13) in the sample is too small to produce 12 degrees of freedom for error. Therefore, the reported F-statistic is incorrect and cannot be trusted.

A Researcher Reports the Results of an ANOVA for a Repeated-Measures