mean deviation from the mean

English Thesaurus

1. the arithmetic mean of the absolute values of deviations from the mean of a distribution (noun.cognition)

hypernym	:	deviation,
definition	:	the difference between an observed value and the expected value of a variable or function (noun.cognition)

domain category	:	statistics,
definition	:	a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters (noun.cognition)