Variance

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

[Category=Data Quality ]

Source: Larry English, http://www.iaidq.com/main/glossary.shtml , 14-Feb-2009 11:30

---

These advertisers support this free service

---

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, https:web.archive.org/web/20111109014246/http:www.isixsigma.com/index.php?option=com_glossary

---

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, http://www.mass.gov/dep/cleanup/laws/glossa01.htm //

---

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, http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation