The mean of a distribution is 75 and the median is 72. If 20 points are subtracted from each score, the mean of this altered distribution will be
A) 75
B) 65
C) 55
D) altered in some way, but there is insufficient information to say exactly how

Question

Quizplus · Accepted Answer

When a constant is subtracted from each score in a distribution, the mean is also reduced by that constant. Therefore, subtracting 20 from each score will reduce the mean by 20, resulting in a new mean of 55.

The Mean of a Distribution Is 75 and the Median