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# mean deviation

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noun Statistics.

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.

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Also called average deviation.

## Origin of mean deviation

First recorded in 1890ā95

## Words nearby mean deviation

mean anomaly, mean business, meander, meandering stream, meander line, mean deviation, mean distance, meandrous, mean free path, meanie, meaning

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, Ā© Random House, Inc. 2023

## How to use mean deviation in a sentence

## British Dictionary definitions for mean deviation

mean deviation

noun statistics

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
Ā© William Collins Sons & Co. Ltd. 1979, 1986 Ā© HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Scientific definitions for mean deviation

mean deviation

In a statistical distribution, the average of the absolute values of the differences between individual numbers and their mean.

The American HeritageĀ® Science Dictionary
Copyright Ā© 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.