Function average`Const`

average(): (src: Iterable) => number
Computes the arithmetic mean of a numeric iterable, throwing if the sequence is empty.

Curried version of _average.

Returns (src: Iterable) => number
The arithmetic mean of the input values.
Throws
Error when the iterable produces no elements.
Example
```
const mean = _average([2, 4, 6]);
console.log(mean); // 4
```
or using the curried version:
```
const mean = pipeInto([2, 4, 6], average());
console.log(mean); // 4
```