Question

In DeShawn's statistics class there were three exams. The first was worth 20% of the course grade and DeShawn scored 90. The second was worth 30% and DeShawn scored 80. The third was worth 50% and DeShawn scored 100. What was the weighted mean of DeShawn's exam scores for his course grade?

Answer 1

Weighted mean of DeShawn's exam scores for his course grade=92%

Explanation:

Given that in DeShawn's statistics class there were three exams. The first was worth 20% of the course grade and DeShawn scored 90. The second was worth 30% and DeShawn scored 80. The third was worth 50% and DeShawn scored 100.

To find out weight average score of De Shawn

Test Scores Worth ProductI

I 90 0.2 18

2 80 0.3 24

3 100 0.5 50

Total 92

Weighted mean of DeShawn's exam scores for his course grade=92%