Two accounting professors decided to compare the variation of their grading procedures. To accomplish this, they each graded the same 10 exams with the following results: The calculated F ratio is:
A) 3.484
B) 1.867
C) 3.18
D) 5.35

Question

Two accounting professors decided to compare the variation of their grading procedures. To accomplish this, they each graded the same 10 exams with the following results:  The calculated F ratio is:
A) 3.484 
B) 1.867 
C) 3.18 
D) 5.35

Quizplus · Accepted Answer

To calculate the F ratio, we need to find the variance of each professor's grades and divide the larger variance by the smaller variance. The variance for professor 1 is 146.1 and the variance for professor 2 is 41.96. Dividing the larger variance by the smaller variance gives us an F ratio of 3.484. Therefore, the answer is A.

Two Accounting Professors Decided to Compare the Variation of Their