Question: Identify the characteristics of the mean.

• The mean has the following characteristics:

a. Changing an existing score will change the mean.

b. Adding a new score or removing an existing score will change the mean, unless that value equals the mean.

c. Adding, subtracting, multiplying, or dividing each score in a distribution by a constant will cause the mean to change by that constant.

d. The sum of the differences of scores from their mean is zero.

e. The sum of the squared differences of scores from their mean is minimal