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The arithmetic mean or arithmetic average of a list of numbers is the sum of the numbers divided by the list's length.

$ \overline{x}=\frac1n\cdot\sum_{k=1}^n x_k $

The arithmetic mean, denoted $ \overline{x} $ , is found amongst $ n $ distinct values of $ x $ by summing them and dividing by $ n $ .

See also

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