# arithmetic mean

## arithmetic mean

noun Statistics.
the mean obtained by adding several quantities together and dividing the sum by the number of quantities: the arithmetic mean of 1, 5, 2, and 8 is 4.
Also called

Origin:
1790–1800

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
 arithmetic mean —n Compare geometric mean Often shortened to: mean, Also called: average an average value of a set of integers, terms, or quantities, expressed as their sum divided by their number: the arithmetic mean of 3, 4, and 8 is 5

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American Heritage
Medical Dictionary

arithmetic mean a·rith·me·tic mean (ə-rĭth'mĭ-tĭk)
n.
The value obtained by calculating the sum of a set of quantities and then dividing that sum by the number of quantities in the set. Also called average.

The American Heritage® Stedman's Medical Dictionary
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American Heritage
Science Dictionary
 arithmetic mean  [%PREMIUM_LINK%]     (ār'ĭth-mět'ĭk)  Pronunciation Key  The value obtained by dividing the sum of a set of quantities by the number of quantities in the set. For example, if there are three test scores 70, 83, and 90, the arithmetic mean of the scores is their sum (243) divided by the number of scores (3), or 81. See more at mean. Compare average, median, mode.
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FOLDOC
Computing Dictionary

### arithmetic mean definition

mathematics
The mean of a list of N numbers calculated by dividing their sum by N. The arithmetic mean is appropriate for sets of numbers that are added together or that form an arithmetic series. If all the numbers in the list were changed to their arithmetic mean then their total would stay the same.
For sets of numbers that are multiplied together, the geometric mean is more appropriate.
(2007-03-20)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
Average air temperatures were calculated by arithmetic mean.
The solid horizontal line indicates arithmetic mean recruitment over the same period.
The arithmetic mean is located on the line of symmetry of the curve.
Synonyms