A study compares the attitudes of 9 Seniors, 9 Juniors, 9 Sophomores, and 9 First-year students and obtains a value of 2.98 for the F-ratio. Which of the following is the correct way to present this analysis? A) F(4,36) = 2.98, p .05 C) F(3,32) = 2.98, p

Question

A study compares the attitudes of 9 Seniors, 9 Juniors, 9 Sophomores, and 9 First-year students and obtains a value of 2.98 for the F-ratio. Which of the following is the correct way to present this analysis?
A) F(4,36) = 2.98, p < .05
B) F(4,36) = 2.98, p > .05
C) F(3,32) = 2.98, p < .05
D) F(3,35) = 2.98, p < .05

Quizplus · Accepted Answer

The study compares the attitudes of students in four different groups, so the degrees of freedom for the numerator should be 3. The degrees of freedom for the denominator should be the total number of participants minus the number of groups being compared, which is 36-4=32. The calculated F-value is 2.98, and according to convention, a p-value of less than .05 is considered statistically significant. Therefore, the correct way to present this analysis is F(3,32) = 2.98, p < .05.

A Study Compares the Attitudes of 9 Seniors, 9 Juniors