edu.ucla.stat.SOCR.distributions
Class ChiSquareDistribution

java.lang.Object
  edu.ucla.stat.SOCR.core.SOCRValueSettable
      edu.ucla.stat.SOCR.core.Distribution
          edu.ucla.stat.SOCR.distributions.GammaDistribution
              edu.ucla.stat.SOCR.distributions.ChiSquareDistribution

All Implemented Interfaces:

IValueSettable, Pluginable, java.util.Observer

public class ChiSquareDistribution
extends GammaDistribution

This class defines the chi-square distribution with a specifed degrees of freedom. http://mathworld.wolfram.com/Chi-SquaredDistribution.html .

Field Summary

Fields inherited from class edu.ucla.stat.SOCR.core.Distribution

applet, CONTINUOUS, DISCRETE, MAXMGFXVAL, MAXMGFYVAL, MINMGFXVAL, MIXED, name

Constructor Summary

ChiSquareDistribution()

ChiSquareDistribution(double[] distData)

ChiSquareDistribution(float[] distData)

ChiSquareDistribution(int n)
This general constructor creates a new chi-square distribuiton with a specified degrees of freedom parameter

Method Summary

int	getDegrees() This method returns the degrees of freedom
java.lang.String	getOnlineDescription() This method returns an online description of this distribution.
void	initialize() used for some subclass to initialize before being used
void	paramEstimate(double[] distData)
void	setDegrees(int n) This method sets the degrees of freedom
double	simulate() This method simulates a value from the distribuiton, as the sum of squares of independent, standard normal distribution
void	valueChanged()

Methods inherited from class edu.ucla.stat.SOCR.distributions.GammaDistribution

getCDF, getDensity, getMaxDensity, getMean, getMGF, getScale, getShape, getVariance, setParameters

Methods inherited from class edu.ucla.stat.SOCR.core.Distribution

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

Methods inherited from class edu.ucla.stat.SOCR.core.SOCRValueSettable

createComponentSetter, createValueSetter, createValueSetter, createValueSetter, createValueSetter, getComponentSetter, getComponentSetters, getValueSetter, getValueSetters

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ChiSquareDistribution

public ChiSquareDistribution(int n)

This general constructor creates a new chi-square distribuiton with a specified degrees of freedom parameter

ChiSquareDistribution

public ChiSquareDistribution()

ChiSquareDistribution

public ChiSquareDistribution(double[] distData)

ChiSquareDistribution

public ChiSquareDistribution(float[] distData)

Method Detail

initialize

public void initialize()

Description copied from class: Distribution

used for some subclass to initialize before being used

Overrides:

initialize in class GammaDistribution

valueChanged

public void valueChanged()

Overrides:

valueChanged in class GammaDistribution

setDegrees

public void setDegrees(int n)

This method sets the degrees of freedom

getDegrees

public int getDegrees()

This method returns the degrees of freedom

simulate

public double simulate()

This method simulates a value from the distribuiton, as the sum of squares of independent, standard normal distribution

Overrides:

simulate in class GammaDistribution

paramEstimate

public void paramEstimate(double[] distData)

Overrides:

paramEstimate in class GammaDistribution

getOnlineDescription

public java.lang.String getOnlineDescription()

This method returns an online description of this distribution.

Overrides:

getOnlineDescription in class GammaDistribution