public class GammaDistribution extends Distribution
applet, CONTINUOUS, DISCRETE, MAXMGFXVAL, MAXMGFYVAL, MINMGFXVAL, MIXED, name
Constructor and Description |
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GammaDistribution()
Default Constructor: creates a new gamma distribution with shape
parameter 1 and scale parameter 1
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GammaDistribution(double[] distData) |
GammaDistribution(double k,
double b)
General Constructor: creates a new gamma distribution with shape
parameter k and scale parameter b
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GammaDistribution(float[] distData) |
Modifier and Type | Method and Description |
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double |
getCDF(double x)
Cumulative distribution function
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double |
getDensity(double x)
Density function
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double |
getMaxDensity()
Maximum value of getDensity function
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double |
getMean()
Mean
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double |
getMGF(double t)
Computes the moment generating function in closed form for a
parameter t which lies in the domain of the distribution.
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java.lang.String |
getOnlineDescription()
This method returns an online description of this distribution.
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double |
getScale()
Get scale parameters
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double |
getShape()
Get shape parameters
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double |
getVariance()
Variance
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void |
initialize()
used for some subclass to initialize before being used
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void |
paramEstimate(double[] distData) |
void |
setParameters(double k,
double b)
Set parameters and assign the default partition
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double |
simulate()
Simulate a value
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void |
valueChanged() |
addObserver, betaCDF, comb, factorial, findGFRoot, findRoot, gamma, gammaCDF, getDisplayPane, getDomain, getFailureRate, getGFDerivative, getGFSecondDerivative, getInstance, getLocalHelp, getMean, getMedian, getMgfDomain, getName, getPGF, getPGFDomain, getQuantile, getSampleMoment, getSD, getSOCRDistributionFunctors, getSOCRDistributions, getType, getVariance, inverseCDF, logGamma, perm, sampleMean, sampleVar, setApplet, setDomain, setDomain, setMGFDomain, setMGFDomain, setMGFParameters, setMGFParameters, setMGFParameters, setMGFParameters, setParameters, setPGFDomain, setPGFDomain, setPGFParameters, setPGFParameters, setPGFParameters, setPGFParameters, update, valueChanged
createComponentSetter, createValueSetter, createValueSetter, createValueSetter, createValueSetter, getComponentSetter, getComponentSetters, getValueSetter, getValueSetters
public GammaDistribution(double[] distData)
public GammaDistribution(float[] distData)
public GammaDistribution(double k, double b)
public GammaDistribution()
public void initialize()
Distribution
initialize
in class Distribution
public void valueChanged()
valueChanged
in class Distribution
public void setParameters(double k, double b)
public double getShape()
public double getScale()
public double getDensity(double x)
getDensity
in class Distribution
public double getMaxDensity()
getMaxDensity
in class Distribution
public double getMean()
getMean
in class Distribution
public double getVariance()
getVariance
in class Distribution
public double getCDF(double x)
getCDF
in class Distribution
public double getMGF(double t) throws ParameterOutOfBoundsException
getMGF
in class Distribution
ParameterOutOfBoundsException
public double simulate()
simulate
in class Distribution
public java.lang.String getOnlineDescription()
getOnlineDescription
in class Distribution
public void paramEstimate(double[] distData)
paramEstimate
in class Distribution