Fifteen accounting majors had an average grade of 90 on a finance exam. Seven marketing majors averaged 85, while ten finance majors averaged 93 on the same exam. What is the weighted mean for the 32 students taking the exam?
A) 89.84
B) 89.33
C) 89.48
D) Impossible to determine without more information
E) None of the choices are correct.

Question

Quizplus · Accepted Answer

The weighted mean is calculated by multiplying each group's average by the number of students in that group, summing these products, and then dividing by the total number of students. (15*90 + 7*85 + 10*93) / 32 = 89.84.

Fifteen Accounting Majors Had an Average Grade of 90 on a Finance