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Dictionary


ar'ithmet'ic mean'



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 average.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

arithmeticianarithmetic progression
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