Which statistic summarizes the variability of groups of scores by measuring the average distance of individual scores from the mean?
A)mode
B)standard deviation
C)standard error of measurement

Question

Quizplus · Accepted Answer

The standard deviation summarizes the variability of groups of scores by measuring the average distance of individual scores from the mean. The mode represents the most frequently occurring score, and the standard error of measurement is a measure of the reliability of a test score.

Which Statistic Summarizes the Variability of Groups of Scores by Measuring