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March 30, 2017

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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?
TH

  • Math - ,

    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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