Question

Mr. Taylor raised all his students’ scores on a recent test by five
points. How were the mean and the range of the scores affected?
(1) The mean increased by five and the range increased by five.
(2) The mean increased by five and the range remained the same.
(3) The mean remained the same and the range increased by five.
(4) The mean remained the same and the range remained the same.

Answer 1

2. The mean is the average so it phase shifted up five points where as the range is the difference between the highest and lowest # which wouldn't change if all the numbers were adjusted.