(definition)

**Definition:**
The (arithmetic) mean of some values is the sum of all values divided by the number of values.

**See also**
*median*, *mode*, *midrange*.

*Note:
The mean of 1, 1, 3, 50, and 60 is 23. (1 + 1 + 3 + 50 + 60) / 5 = 23.*

Author: PEB

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Entry modified 15 March 2006.

HTML page formatted Wed Mar 13 12:42:46 2019.

Cite this as:

Paul E. Black, "mean", in
*Dictionary of Algorithms and Data Structures* [online], Paul E. Black, ed. 15 March 2006. (accessed TODAY)
Available from: https://www.nist.gov/dads/HTML/mean.html