Two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80,
And Section B had 20 students who had a mean score of 90. Overall, what was the approximate
Mean score for all of the students on the quiz?
A) 84.3
B) none of these
C) 85.0
D) It cannot be determined.
E) 85.7

Question

Quizplus · Accepted Answer

The overall mean score is calculated by taking the weighted average: (15*80 + 20*90) / (15+20) = 85.7.

Two Sections of a Class Took the Same Quiz