Asked by Gail
For a class test, the mean score was 65, the median score was 71 and sthe standard deviation of the scores was 7. The teacher decided to add 5 points to each score due to a grading error. Which of the folloiwng must be true for thenew scores?
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Answers
Answered by
bobpursley
Hmmmm. the mean is now 70, the median is now 76, and the standard deviation is 7. That is not a smart way to curve grades, usually.
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