edu.ucla.stat.SOCR.distributions
Class BenfordDistribution

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

All Implemented Interfaces:

IValueSettable, Pluginable, java.util.Observer

public class BenfordDistribution
extends Distribution

This class models the Benford distribution with parameters m (population size), n (sample size), and r (number of type 1 objects). http://en.wikipedia.org/wiki/Benford's_law .

Field Summary

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

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

Constructor Summary

BenfordDistribution()
Default constructor: creates a new Benford distribuiton with parameters b=10

BenfordDistribution(int b)
General constructor: creates a new Benford distribution with specified value of the log-base parameter

Method Summary

double	getDensity(double x) Density function
int	getLogBase() Get population size
double	getMaxDensity() Maximum value of the getDensity function
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	setLogBase(int b) Set population size
void	setParameters(int b) Set the parameters of the distribution
void	valueChanged()

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

addObserver, betaCDF, comb, factorial, findGFRoot, findRoot, gamma, gammaCDF, getCDF, getDisplayPane, getDomain, getFailureRate, getGFDerivative, getGFSecondDerivative, getInstance, getLocalHelp, getMean, getMean, getMedian, getMGF, getMgfDomain, getName, getPGF, getPGFDomain, getQuantile, getSampleMoment, getSD, getSOCRDistributionFunctors, getSOCRDistributions, getType, getVariance, getVariance, inverseCDF, logGamma, paramEstimate, perm, sampleMean, sampleVar, setApplet, setDomain, setDomain, setMGFDomain, setMGFDomain, setMGFParameters, setMGFParameters, setMGFParameters, setMGFParameters, setParameters, setPGFDomain, setPGFDomain, setPGFParameters, setPGFParameters, setPGFParameters, setPGFParameters, simulate, 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

BenfordDistribution

public BenfordDistribution(int b)

General constructor: creates a new Benford distribution with specified value of the log-base parameter

BenfordDistribution

public BenfordDistribution()

Default constructor: creates a new Benford distribuiton with parameters b=10

Method Detail

initialize

public void initialize()

Description copied from class: Distribution

used for some subclass to initialize before being used

Overrides:

initialize in class Distribution

valueChanged

public void valueChanged()

Overrides:

valueChanged in class Distribution

setParameters

public void setParameters(int b)

Set the parameters of the distribution

getDensity

public double getDensity(double x)

Density function

Specified by:

getDensity in class Distribution

getMaxDensity

public double getMaxDensity()

Maximum value of the getDensity function

Overrides:

getMaxDensity in class Distribution

setLogBase

public void setLogBase(int b)

Set population size

getLogBase

public int getLogBase()

Get population size

getOnlineDescription

public java.lang.String getOnlineDescription()

This method returns an online description of this distribution.

Overrides:

getOnlineDescription in class Distribution