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Weighted Mean=w1+w2+⋯+wnw1x1+w2x2+⋯+wnxn
As an example, consider three 100-point assignments that are worth different percentages of the total grade of a course. The following table shows the scores of a student on each assignment.
Assignment | Score | Weight |
---|---|---|
Exam | 60 | 50%=0.5 |
Quiz | 80 | 20%=0.2 |
Term Paper | 90 | 30%=0.3 |