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

Question

Quizplus · Accepted Answer

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

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