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64 changes: 36 additions & 28 deletions lib/node_modules/@stdlib/stats/base/dists/chi/cdf/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -121,9 +121,42 @@ y = mycdf( 1.5 );
// returns ~0.478
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
var uniform = require( '@stdlib/random/array/uniform' );
var logEachMap = require( '@stdlib/console/log-each-map' );
var cdf = require( '@stdlib/stats/base/dists/chi/cdf' );

var opts = {
'dtype': 'float64'
};
var x = uniform( 20, 0.0, 10.0, opts );
var k = discreteUniform( 20, 0, 10, opts );

logEachMap( 'x: %0.4f, k: %d, F(x;k): %0.4f', x, k, cdf );
```

</section>

<!-- /.examples -->

<!-- C interface documentation. -->

* * *

### C APIs
<section class="c">

## C APIs

<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->

Expand All @@ -137,7 +170,7 @@ y = mycdf( 1.5 );

<section class="usage">

#### Usage
### Usage

```c
#include "stdlib/stats/base/dists/chi/cdf.h"
Expand Down Expand Up @@ -213,32 +246,7 @@ int main( void ) {

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
var uniform = require( '@stdlib/random/array/uniform' );
var logEachMap = require( '@stdlib/console/log-each-map' );
var cdf = require( '@stdlib/stats/base/dists/chi/cdf' );

var opts = {
'dtype': 'float64'
};
var x = uniform( 20, 0.0, 10.0, opts );
var k = discreteUniform( 20, 0, 10, opts );

logEachMap( 'x: %0.4f, k: %d, F(x;k): %0.4f', x, k, cdf );
```

</section>

<!-- /.examples -->
<!-- /.c -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@

// MODULES //

var isnan = require( '@stdlib/math/base/assert/is-nan' );
var sqrt = require( '@stdlib/math/base/special/sqrt' );
var variance = require( '@stdlib/stats/base/dists/chi/variance' );

Expand Down Expand Up @@ -49,6 +50,9 @@ var variance = require( '@stdlib/stats/base/dists/chi/variance' );
* // returns NaN
*/
function stdev( k ) {
if ( isnan( k ) || k < 0.0 ) {
return NaN;
}
return sqrt( variance( k ) );
}

Expand Down