The mean is not overly affected by extreme scores, unless
A) the extreme scores are all in one direction
B) the extreme scores are in both directions
C) the number of extreme scores is fewer than 5
D) all of these

Question

Quizplus · Accepted Answer

The mean is sensitive to extreme scores if they are all in one direction, meaning they are either all very high or very low. If the extreme scores are in both directions, they can sometimes cancel each other out and not have as big of an impact on the mean. If the number of extreme scores is fewer than 5, it may or may not have a significant effect depending on the size of the data set. Therefore, choice A is the best answer as it accurately describes the situation where the mean is most affected by extreme scores.

The Mean Is Not Overly Affected by Extreme Scores, Unless