The first five participants in a study of motivation have scores of 5, 6, 7, 11, and 11 on the motivation questionnaire. Which of the following will change most if the next participant receives a score of 1?
A) Mean
B) Median
C) Reliability
D) Validity

Question

Quizplus · Accepted Answer

The mean will change most significantly with the addition of a score of 1, as it affects the average of all scores directly. The median, reliability, and validity are less sensitive to a single extreme score.

The First Five Participants in a Study of Motivation Have