6.2 KiB
6.2 KiB
Beta Prime
Beta prime distribution.
Usage
var betaprime = require( '@stdlib/stats/base/dists/betaprime' );
betaprime
Beta prime distribution.
var dist = betaprime;
// returns {...}
The namespace contains the following distribution functions:
cdf( x, alpha, beta ): beta prime distribution cumulative distribution function.logcdf( x, alpha, beta ): evaluate the natural logarithm of the cumulative distribution function for a beta prime distribution .logpdf( x, alpha, beta ): beta prime distribution logarithm of probability density function (PDF).pdf( x, alpha, beta ): beta prime distribution probability density function (PDF).quantile( p, alpha, beta ): beta prime distribution quantile function.
The namespace contains the following functions for calculating distribution properties:
kurtosis( alpha, beta ): beta prime distribution excess kurtosis.mean( alpha, beta ): beta prime distribution expected value.mode( alpha, beta ): beta prime distribution mode.skewness( alpha, beta ): beta prime distribution skewness.stdev( alpha, beta ): beta prime distribution standard deviation.variance( alpha, beta ): beta prime distribution variance.
The namespace contains a constructor function for creating a betaprime distribution object.
BetaPrime( [alpha, beta] ): beta prime distribution constructor.
var BetaPrime = require( '@stdlib/stats/base/dists/betaprime' ).BetaPrime;
var dist = new BetaPrime( 2.0, 4.0 );
var mu = dist.mean;
// returns ~0.667
Examples
var objectKeys = require( '@stdlib/utils/keys' );
var betaprime = require( '@stdlib/stats/base/dists/betaprime' );
console.log( objectKeys( betaprime ) );