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

Rayleigh

Rayleigh distribution.

Usage

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

rayleigh

Rayleigh distribution.

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

The namespace contains the following distribution functions:

• cdf( x, sigma ): Rayleigh distribution cumulative distribution function.
• logcdf( x, sigma ): Rayleigh distribution logarithm of cumulative distribution function.
• logpdf( x, sigma ): Rayleigh distribution logarithm of probability density function (PDF).
• mgf( t, sigma ): Rayleigh distribution moment-generating function (MGF).
• pdf( x, sigma ): Rayleigh distribution probability density function (PDF).
• quantile( p, sigma ): Rayleigh distribution quantile function.

The namespace contains the following functions for calculating distribution properties:

• entropy( sigma ): Rayleigh distribution differential entropy.
• kurtosis( sigma ): Rayleigh distribution excess kurtosis.
• mean( sigma ): Rayleigh distribution expected value.
• median( sigma ): Rayleigh distribution median.
• mode( sigma ): Rayleigh distribution mode.
• skewness( sigma ): Rayleigh distribution skewness.
• variance( sigma ): Rayleigh distribution variance.

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

• Rayleigh( [sigma] ): Rayleigh distribution constructor.

var Rayleigh = require( '@stdlib/stats/base/dists/rayleigh' ).Rayleigh;

var dist = new Rayleigh( 2.0 );

var y = dist.pdf( 0.8 );
// returns ~0.185

Examples

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

console.log( objectKeys( rayleigh ) );