### noun

**(1) **The sum of the values of a random variable divided by the number of values

### Noun

- The measure of central tendency of a set of values computed by dividing the sum of the values by their number; commonly called the
**mean** or the **average**.
*The arithmetic mean of 3, 6, 2, 3 and 6 is (3 + 6 + 2 + 3 + 6) / 5 = 4*

#### Usage notes

- In scientific and economic contexts, this term is preferable to
*average*, which can also mean the mode or the median depending on context.