a measure of dispersion, computed by taking the arithmetic mean of the absolute values of the deviations of the functional values from some central value, usually the mean or median.
What’s The Difference: Average, Mean, Median, And ModeAs you probably know the terms average, mean, median, and mode are commonly confused with one another because they all describe ways to talk about sets of numbers.
Origin of mean deviation
First recorded in 1890–95
Also called average deviation.
Definition for average deviation (2 of 2)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for average deviation (1 of 2)
statistics another name for mean deviation
British Dictionary definitions for average deviation (2 of 2)
the difference between an observed value of a variable and its mean
Also: mean deviation from the mean, mean deviation from the median, average deviation a measure of dispersion derived by computing the mean of the absolute values of the differences between observed values of a variable and the variable's mean
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Science definitions for average deviation
In a statistical distribution, the average of the absolute values of the differences between individual numbers and their mean.
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