Statistics & Probability
Mean (Average)
Arithmetic mean of a data set.
Formula
Formula
x̄ = Σ xin
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| xᵢ | data values | computed result | — | result |
| n | count | computed result | — | result |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givendata = 4, 8, 15, 16, 23, 42
Result18
Example 2
Givendata = 10, 20, 30
Result20