The influence of a few extreme scores in one direction is most pronounced on the value of the
A) mean
B) median
C) mode
D) percentile

Question

Quizplus · Accepted Answer

The mean is calculated by adding all the scores and dividing by the number of scores. Therefore, extreme scores have a greater impact on the mean than on the median or mode, which are based on the middle or most frequent score, respectively. The influence of extreme scores can skew the mean in one direction or the other, making it less representative of the overall data.

The Influence of a Few Extreme Scores in One Direction