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# Median

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## Median - definitions

Median : The middle value in an ordered set of values. If the set contains an even number of values, the median is calculated by adding the middle two values and dividing by 2.

[Category=Data Quality ]

Source: Larry English, http://www.iaidq.com/main/glossary.shtml , 02-Feb-2009 10:32

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Median - The median is a measure of central tendancy that is determined by sorting a list of values in ascending order and picking the middle value. For example, the median age would be 65 for the following set of observations: 19, 25, 36, 65, 66, 68, 70. Notice that the arithmetic mean is only 50 (significantly lower).

[Category=Database Management ]

Source: NextMark, 14 August 2009 11:17:15, https://www.nextmark.com/resources/glossary-of-terms/ ?glossaryTermId=a0800000000FVTnAAO

Median - The middle number or center value of a set of data in which all the data are arranged in sequence.

[Category=Quality ]

Source: American Society for Quality, 04 October 2010 07:46:44, http://www.asq.org/glossary/

Median - Relating to or constituting the middle value in a distribution. The median is the middle point of a data set; 50% of the values are below this point, and 50% are above this point. Median is the middle value, when all possible values are listed in order. Median is not the same as Average (or Mean).

[Category=Data Quality ]

Source: iSixSigma, 03 February 2011 09:08:07, https:web.archive.org/web/20111109014246/http:www.isixsigma.com/index.php?option=com_glossary

median - [mathematics] The middle value of a set of values when they are ordered by rank. Half the values in a set are higher than the median, and half are lower. When there are two middle values (if the set has an even number of elements) the median is the mean of these two values.

[Category=Geospatial ]

Source: esri, 09 June 2012 08:14:27, http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation

Data Quality Glossary.  A free resource from GRC Data Intelligence. For comments, questions or feedback: dqglossary@grcdi.nl