Which measure of variability should never be used alone to reach conclusions regarding the variance of a distribution?

A) standard deviation
B) mode
C) variance
D) range

Variability

The extent to which data points in a statistical distribution or data set diverge from the average or mean value.

Range

The difference between the highest and lowest scores in a set of data.

Standard Deviation

A measure of the amount of variability or dispersion of a set of data values, indicating how much variation there is from the average (mean).