time-to-botec/squiggle/node_modules/@stdlib/stats/base/dists/chi/README.md

Chi

Chi distribution.

Usage

var chi = require( '@stdlib/stats/base/dists/chi' );

chi

Chi distribution.

var dist = chi;
// returns {...}

The namespace contains the following distribution functions:

• cdf( x, k ): Chi distribution cumulative distribution function.
• logpdf( x, k ): evaluate the natural logarithm of the probability density function (PDF) for a chi distribution .
• pdf( x, k ): Chi distribution probability density function (PDF).
• quantile( p, k ): Chi distribution quantile function.

The namespace contains the following functions for calculating distribution properties:

• entropy( k ): Chi distribution differential entropy.
• kurtosis( k ): Chi distribution excess kurtosis.
• mean( k ): Chi distribution expected value.
• mode( k ): Chi distribution mode.
• skewness( k ): Chi distribution skewness.
• stdev( k ): Chi distribution standard deviation.
• variance( k ): Chi distribution variance.

The namespace contains a constructor function for creating a Chi distribution object.

• Chi( [k] ): Chi distribution constructor.

var Chi = require( '@stdlib/stats/base/dists/chi' ).Chi;

var dist = new Chi( 4.0 );

var mu = dist.mean;
// returns ~1.88

Examples

var objectKeys = require( '@stdlib/utils/keys' );
var chi = require( '@stdlib/stats/base/dists/chi' );

console.log( objectKeys( chi ) );