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If 50 students take a test 35 average a score of 80 and 15 score an average of 70 what is the average of all 50?
Wiki User
∙ 15y ago
You could add all 50 test scores or use frequency. Add 35 times 80 percent to 15 times 70 percent and then divide by the 50 students.
Wiki User
∙ 15y ago
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When calculating average improvement of students do you take the average of all improvement percentages or do you average all pre-test scores all post-test scores and then calculate the difference?
I was given this formula in college: IND Posttest score - IND pretest score ______________________________ = Improvement Score Highest score for all - IND pretest score
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