average deviation

statistics

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June 18, 2026

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The average deviation, also known as mean deviation, is a statistical measure used to evaluate the dispersion of a set of data. It represents the average of the absolute differences between each data point and either the mean or median of the dataset. This value provides insight into the variability within the data, indicating how spread out the numbers are from a central point. It is one of several statistical methods used to quantify the random error in measurements, alongside standard deviation and variance.12

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Another statistical term, the average deviation, is calculated by adding the differences, while ignoring the sign, between each result and the average of all the results, and then dividing the sum by the number of results. Confidence limits at a given probability level are values greater than and less…
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Another statistical term, the average deviation, is calculated by adding the differences, while ignoring the sign, between each result and the average of all the results, and then dividing the sum by the number of results. Confidence limits at a given probability level are values greater than and less…
Read More