net.maizegenetics.stats.statistics

Class GammaDistribution

net.maizegenetics.stats.statistics.GammaDistribution

Direct Known Subclasses:

ApproxFastChiSquareDistribution, ChiSquareDistribution, ExponentialDistribution

public class GammaDistribution

gamma distribution. (Parameters: shape, scale; mean: scale*shape; variance: scale^2*shape)

Method Detail

pdf

public static double pdf(double x,
                         double shape,
                         double scale)

probability density function of the Gamma distribution

Parameters:

x - argument

shape - shape parameter

scale - scale parameter

Returns:

org.jetbrains.dokka.NodeRenderContent@1806aaa7: pdf value

cdf

public static double cdf(double x,
                         double shape,
                         double scale)

cumulative density function of the Gamma distribution

Parameters:

x - argument

shape - shape parameter

scale - scale parameter

Returns:

org.jetbrains.dokka.NodeRenderContent@3061b5c4: cdf value

quantile

public static double quantile(double y,
                              double shape,
                              double scale)

quantile (inverse cumulative density function) of the Gamma distribution

Parameters:

y - argument

shape - shape parameter

scale - scale parameter

Returns:

org.jetbrains.dokka.NodeRenderContent@40c76c70: icdf value

mean

public static double mean(double shape,
                          double scale)

mean of the Gamma distribution

Parameters:

shape - shape parameter

scale - scale parameter

Returns:

org.jetbrains.dokka.NodeRenderContent@2fa98c63: mean

variance

public static double variance(double shape,
                              double scale)

variance of the Gamma distribution

Parameters:

shape - shape parameter

scale - scale parameter

Returns:

org.jetbrains.dokka.NodeRenderContent@2d748a3: variance