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Variance - definitions

Variance (v or Σ ) - The mean of the squared deviations of a set of values, expressed as :

[Category=Data Quality ]

Source: Larry English, External , 14-Feb-2009 11:30

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Variance - The sum of the squared deviations of n measurements from their mean divided by (n-1).

The deviation from what was expected.

Deviation from process mean ie, away from the target which often results in extra cost to revert back on target/mean.

[Category=Data Quality ]

Source: iSixSigma, 03 March 2011 09:09:55, External

Variance (statistical) - A measure or dispersion of a sample or population distribution.

[Category=Quality Assurance ]

/;/Source: Massachusetts Department of Environmental Protection, 29 March 2011 08:59:36, External//

variance - [statistics] A numeric description of how values in a distribution vary or deviate from the mean. The larger the variance, the greater the dispersion of values around the mean. The standard deviation for a distribution is the square root of the variance.

[Category=Geospatial ]

Source: esri, 25 September 2012 08:33:36, External 

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