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Meaning of arithmetic mean

ar'ithmet'ic mean'

Pronunciation: [key]
— Statistics. Statistics.
  1. the mean obtained by adding several quantities together and dividing the sum by the number of quantities:Also called the arithmetic mean of 1, 5, 2, and 8 is 4.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.