## MATH

### .average
calculates the average of the given values

```ruby
Math.average([ 0, 1, 2, 3, 4 ])
```

returns
```
2
```

It can also be used to calculate the average of weighted values

```ruby
Math.average(
  0 => 1,
  1 => 2,
  2 => 3,
  3 => 4,
  4 => 5
)
```

returns
```
2.6666
```