time-to-botec/squiggle/node_modules/@stdlib/stats/base/dists/beta

Beta

Beta distribution.

Usage

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

beta

Beta distribution.

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

The namespace contains the following distribution functions:

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

The namespace contains the following functions for calculating distribution properties:

• entropy( alpha, beta ): beta distribution differential entropy.
• kurtosis( alpha, beta ): beta distribution excess kurtosis.
• mean( alpha, beta ): beta distribution expected value.
• median( alpha, beta ): beta distribution median.
• mode( alpha, beta ): beta distribution mode.
• skewness( alpha, beta ): beta distribution skewness.
• stdev( alpha, beta ): beta distribution standard deviation.
• variance( alpha, beta ): beta distribution variance.

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

• Beta( [alpha, beta] ): beta distribution constructor.

var Beta = require( '@stdlib/stats/base/dists/beta' ).Beta;
var dist = new Beta( 2.0, 4.0 );

var mu = dist.mean;
// returns ~0.333

Examples

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

console.log( objectKeys( beta ) );