This assignment focus to Discuss on Measures of Variability. Here explain Measures of Variability in statistics and mathematical term. Measures of central tendency locate only center of a distribution of procedures. Other measures often are needed to describe data. For examples, the daily earnings associated with Employee A are much more consistent than those associated with Employee B, which demonstrate great variation. This example illustrates the necessity for measures of variation or spread. Here also briefly discuss on Range, Deviation and variance and Standard deviation.