## org.apache.commons.math.distribution
Interface BetaDistribution

All Superinterfaces:
  ContinuousDistribution, Distribution, HasDensity<java.lang.Double>

All Known Implementing Classes:
  BetaDistributionImpl

    public interface BetaDistribution

extends ContinuousDistribution, HasDensity<java.lang.Double>

Computes the cumulative, inverse cumulative and density functions for the beta distribuiton.

Since:
  2.0
Version:
  $Revision: 920852 $ $Date: 2010-03-09 07:53:44 -0500 (Tue, 09 Mar 2010) $
See Also:
  Beta_distribution

Method Summary
`double` `density(java.lang.Double x)` Return the probability density for a particular point.
`double` `getAlpha()` Access the shape parameter, alpha
`double` `getBeta()` Access the shape parameter, beta
`void` `setAlpha(double alpha)` Deprecated. as of 2.1
`void` `setBeta(double beta)` Deprecated. as of 2.1

Methods inherited from interface org.apache.commons.math.distribution.ContinuousDistribution
`inverseCumulativeProbability`

Methods inherited from interface org.apache.commons.math.distribution.Distribution
`cumulativeProbability, cumulativeProbability`

Method Detail

### setAlpha

    @Deprecated
    void setAlpha(double alpha)

  Deprecated. as of 2.1

  Modify the shape parameter, alpha.

  Parameters:
    `alpha` - the new shape parameter.

### getAlpha

    double getAlpha()

  Access the shape parameter, alpha

  Returns:
    alpha.

### setBeta

    @Deprecated
    void setBeta(double beta)

  Deprecated. as of 2.1

  Modify the shape parameter, beta.

  Parameters:
    `beta` - the new scale parameter.

### getBeta

    double getBeta()

  Access the shape parameter, beta

  Returns:
    beta.

### density

    double density(java.lang.Double x)
                   throws MathException

  Return the probability density for a particular point.

  Specified by:
    `density` in interface `HasDensity<java.lang.Double>`
  Parameters:
    `x` - The point at which the density should be computed.
  Returns:
    The pdf at point x.
  Throws:
    `MathException` - if probability density cannot be computed

Copyright (c) 2003-2011 Apache Software Foundation