6.8 KiB
6.8 KiB
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 ) );