If every score in a distribution were to be increased by 12 points, what would be the effect on the mean and the median?
A) The mean would not change, but the median would increase by 12 points.
B) Both the mean and the median would increase by 12 points.
C) The mean would increase by 12 points, but the median would not change.
D) None of the above

Question

Quizplus · Accepted Answer

Adding a constant to every score in a distribution will increase the mean and the median by the same amount. In this case, adding 12 points to every score will increase both the mean and the median by 12 points. Therefore, the best choice is B.

If Every Score in a Distribution Were to Be Increased