A 100-item achievement test is administered to 30 students.Students earn 1 point for each correct answer.In the test results there are three scores of 95.All of the other students score between 10 and 30.What measure of central tendency would be MOST representative of this set of scores?
A) average deviation
B) the median
C) the mode
D) the standard deviation

Question

Quizplus · Accepted Answer

The median is the most representative measure of central tendency in this case because it is not affected by the extreme scores (the three scores of 95), unlike the mean which would be skewed by these high scores. The median accurately reflects the central point of the distribution where most scores lie between 10 and 30.

A 100-Item Achievement Test Is Administered to 30 Students