Which of the Following Is Not a Measure of Variability

Short Answer

Which of the following is not a measure of variability? $\begin{array}{|l|l|}\hline A&\text {The range. }\\\hline B&\text {The variance. }\\\hline C&\text {The arithmetic mean. }\\\hline D&\text { The standard deviation.}\\\hline E&\text { The interquartile range.}\\\hline \end{array}$