The three measures of variability commonly used to reflect the spread or dispersion in a group of scores are the standard deviation, the variance, and the what?
A) range
B) outliers
C) skew
D) percentile

Question

Quizplus · Accepted Answer

The three measures of variability commonly used are the standard deviation, the variance, and the range. The range reflects the difference between the highest and lowest scores in a dataset, indicating the spread of the scores. Outliers are extreme values that lie far away from the majority of the data but are not a measure of variability. Skew measures the asymmetry of the data distribution and is not a measure of variability. Percentile is a measure of position and not a measure of variability.

The Three Measures of Variability Commonly Used to Reflect the Spread