measures of variability definition
Measures of Variability. Variability refers to how spread apart the scores of the distribution are or how much the scores vary from each other.There are four major measures of variability, including the range, interquartile range, variance, and standard deviation.The range represents the difference between the highest and lowest score in a distribution.easures of Variability. Variability refers to how spread apart the scores of the distribution are or how much the scores vary from each other.