Arithmetic Mean

Arithmetic mean is the average of a set of numerical values, as calculated by adding them together and dividing by the number of terms in the set.

Formula to find the arithmetic mean is the sum of all of the numbers in a list divided by the number of items in that list.

i.e.,

The mean of the numbers 3, 4, 5 is,

The arithmetic mean of 3, 4, 5 =  the sum of all of the numbers(3 + 4 + 5 = 12) in a list divided by the number of items in that list(3)

= 12/3 = 4

Therefore arithmetic mean of 3, 4, 5 is 4.

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