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# average

> ⚠️ **This is not a builtin function.**

`average()` is an **array method**, not a standalone function. See [Array aggregating methods](/methods/arrays/aggregating.md).

## Usage

```javascript
[10, 10, 5, 3, 5].average()
// 6.6

[2, 5].average()
// 3.5
```

Call `.average()` on an array to find the mean average of all the values in that array.