Question

45) Mr Thompson's math class averaged poorly on a test, so he gave them a retest. There are 30 students in his class. On the retest, 10 students gained 10 points each, 10 students lost 10 points each, and 10 students had no change in their scores. How does the MEAN of the retest scores compare to the MEAN of the scores on the first test? A) The means are the same. B) The mean on the retest is 3 points higher. C) The mean on the retest is 10 points higher. D) The mean on the retest is 13 points higher.

Answer 1

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