In Statistics, the term dispersion refers to a stretched or squeezed sample distribution. A measure of statistical dispersion is a non-negative real number (i.e) zero, if all the data are same and increases as the data become more diverse. Use this online Measures of Dispersion Calculator to calculate measures of statistical dispersion such as Population size, Sample standard deviation, Interquartile range (IQR), etc., for any sample distributions.
Dispersion is also referred to as variability, scatter or spread. It is one of the widely used properties of distributions. The relative measures of statistical dispersion compare any two sets of data which is the ratio of absolute dispersion to the average.