Question

On a finance exam, 15 accounting majors had an average grade of 90. On the same exam, 7 marketing majors averaged 85, and 10 finance majors averaged 93. What is the weighted mean for all 32 students taking the exam?

Answer 1

89.84375

Explanation:

Given that on a finance exam, 15 accounting majors had an average grade of 90. On the same exam, 7 marketing majors averaged 85, and 10 finance majors averaged 93.

To find weighted mean.

Here weights can be considered as number of majors in each subject

`Marks x     90        85       93\\Weights     15          7         10\\Product     1350    595     930\\`

Weighted total = 1350+595+930 = 2875

Weighted mean = weighted total/total students

`=(2875)/(32) =89.84375`