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Arithmetic Mean

Arithmetic Mean

The most commonly used type of average. To find the arithmetic mean of a set of n numbers, add the numbers in the set and divide the sum by n.

 

Formula: Formula: arithmetic mean = ā = (a₁ + a₂ + a₃ + ··· aₙ) / n
Example:

For the numbers 4 and 9,

arithmetic mean = (4 + 9) / 2 = 6.5

 

See also

Mean