# Signed Rank
> Distribution of the Wilcoxon signed rank test statistic.
## Usage
```javascript
var signrank = require( '@stdlib/stats/base/dists/signrank' );
```
#### signrank
Distribution of the Wilcoxon signed rank test statistic.
```javascript
var dist = signrank;
// returns {...}
```
The namespace contains the following distribution functions:
- [`cdf( x, n )`][@stdlib/stats/base/dists/signrank/cdf]: wilcoxon signed rank test statistic cumulative distribution function.
- [`pdf( x, n )`][@stdlib/stats/base/dists/signrank/pdf]: wilcoxon signed rank test statistic probability density function.
- [`quantile( p, n )`][@stdlib/stats/base/dists/signrank/quantile]: wilcoxon signed rank test statistic quantile function.
## Examples
```javascript
var objectKeys = require( '@stdlib/utils/keys' );
var signrank = require( '@stdlib/stats/base/dists/signrank' );
console.log( objectKeys( signrank ) );
```
[@stdlib/stats/base/dists/signrank/cdf]: https://www.npmjs.com/package/@stdlib/stats/tree/main/base/dists/signrank/cdf
[@stdlib/stats/base/dists/signrank/pdf]: https://www.npmjs.com/package/@stdlib/stats/tree/main/base/dists/signrank/pdf
[@stdlib/stats/base/dists/signrank/quantile]: https://www.npmjs.com/package/@stdlib/stats/tree/main/base/dists/signrank/quantile