The arithmetic mean (usually synonymous with average) represents a point about which the numbers balance. The arithmetic mean, denoted x, of a set of n numbers x 1, x 2, …, x n is defined as the sum of the numbers divided by n: Several kinds of means exist, and the method of calculating a mean depends upon the relationship known or assumed to govern the other members. Mean, in mathematics, a quantity that has a value intermediate between those of the extreme members of some set.
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