# itermidrange
> Compute the [mid-range][mid-range] of all [iterated][mdn-iterator-protocol] values.
The [**mid-range**][mid-range], or **mid-extreme**, is the arithmetic mean of maximum and minimum values. Accordingly, the [mid-range][mid-range] is the midpoint of the [range][range] and a measure of central tendency.
## Usage
```javascript
var itermidrange = require( '@stdlib/stats/iter/midrange' );
```
#### itermidrange( iterator )
Computes the [mid-range][mid-range] of all [iterated][mdn-iterator-protocol] values.
```javascript
var array2iterator = require( '@stdlib/array/to-iterator' );
var arr = array2iterator( [ 1.0, -2.0, 3.0, -4.0 ] );
var v = itermidrange( arr );
// returns -0.5
```
## Notes
- If an iterated value is non-numeric (including `NaN`), the returned [`iterator`][mdn-iterator-protocol] returns `NaN`. If non-numeric iterated values are possible, you are advised to provide an [`iterator`][mdn-iterator-protocol] which type checks and handles non-numeric values accordingly.
## Examples
```javascript
var runif = require( '@stdlib/random/iter/uniform' );
var itermidrange = require( '@stdlib/stats/iter/midrange' );
// Create an iterator for generating uniformly distributed pseudorandom numbers:
var rand = runif( -10.0, 10.0, {
'seed': 1234,
'iter': 100
});
// Compute the mid-range:
var v = itermidrange( rand );
// returns
console.log( 'mid-range: %d.', v );
```
[range]: https://en.wikipedia.org/wiki/Range_%28statistics%29
[mid-range]: https://en.wikipedia.org/wiki/Mid-range
[mdn-iterator-protocol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterator_protocol