# mean

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## mean,

in statistics, a type of average**average,**

number used to represent or characterize a group of numbers. The most common type of average is the arithmetic mean. See median; mode.

**.....**Click the link for more information. . 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).

The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

## mean

see MEASURES OF CENTRAL TENDENCY.Collins Dictionary of Sociology, 3rd ed. © HarperCollins Publishers 2000

## mean

[mēn] (mathematics)

A single number that typifies a set of numbers, such as the arithmetic mean, the geometric mean, or the expected value. Also known as mean value.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

## mean

*Maths*

**a.**the second and third terms of a proportion, as

*b*and

*c*in

*a/b*=

*c/d*

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

## MEAN

(**M**ongo,

**E**xpress,

**A**ngular,

**N**ode) A software stack for Web applications. MongoDB, Express.js, Angular and Node.js comprise the system software for running JavaScript and TypeScript-based Web applications. See Angular, MongoDB and Node.js.

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