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mean, in statistics, a type of average. The arithmetic mean of a group of numbers is found by dividing their sum by the number of members in the group; e.g., the sum of the seven numbers 4, 5, 6, 9, 13, 14, and 19 is 70 so their mean is 70 divided by 7, or 10. Less often used is the geometric mean (for two quantities, the square root of their product; for *n* quantities, the *n*th root of their product).

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Licensed from Columbia University Press

Licensed from Columbia University Press

See *Mean*

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Last updated on Sunday December 03, 2006 at 22:25:58 PST (GMT -0800)

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This article is licensed under the GNU Free Documentation License.

Last updated on Sunday December 03, 2006 at 22:25:58 PST (GMT -0800)

View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation

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