javanpst.tests.goodness.chiSquareTest

Class ChiSquareTest

java.lang.Object

javanpst.tests.StatisticalTest

javanpst.tests.goodness.chiSquareTest.ChiSquareTest

public class ChiSquareTest
extends StatisticalTest

The Chi-square test. This goodness of fit can be used to test if a given sample follows a discrete distribution. This implementation allow to adjust the data to a uniform, binomial, poisson or geometric distribution.

Constructor Summary

Constructors

Constructor and Description
ChiSquareTest() Default builder
ChiSquareTest(DataTable newData) Builder.

Method Summary

Modifier and Type	Method and Description
void	adjustBinomial(int N) Sets the distribution to adjust as a binomial distribution with N parameter.
void	adjustBinomial(int N, double P) Sets the distribution to adjust as a binomial distribution with N and P parameters
void	adjustGeometric(double P) Sets the distribution to adjust as a Geometric distribution with P parameter.
void	adjustPoisson() Sets the distribution to adjust as a Poisson distribution.
void	adjustPoisson(int K) Sets the distribution to adjust as a Poisson distribution with K mean.
void	adjustUniform(int N) Sets the distribution to adjust as a uniform distribution with N parameter
void	clearData() Clears the data stored in the test
void	doTest() Performs the test
double	getPValue() Get p-value of the test
double	getQ() Get Q statistic
java.lang.String	printData() Prints the data stored in the test
java.lang.String	printReport() Prints a report with the results of the test
void	setData(DataTable newData) Load data to test.

Methods inherited from class javanpst.tests.StatisticalTest

isDataReady, isPerformed

Methods inherited from class java.lang.Object

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

Constructor Detail

ChiSquareTest

public ChiSquareTest()

Default builder

ChiSquareTest

public ChiSquareTest(DataTable newData)

Builder. Load data to test.

Parameters:

newData - data to test.

Method Detail

clearData

public void clearData()

Clears the data stored in the test

Specified by:

clearData in class StatisticalTest

setData

public void setData(DataTable newData)

Load data to test.

Parameters:

newData - data to test.

adjustUniform

public void adjustUniform(int N)

Sets the distribution to adjust as a uniform distribution with N parameter

Parameters:

N - N parameter of the distribution

adjustBinomial

public void adjustBinomial(int N,
                           double P)

Sets the distribution to adjust as a binomial distribution with N and P parameters

Parameters:

N - N parameter of the distribution

P - P parameter of the distribution

adjustBinomial

public void adjustBinomial(int N)

Sets the distribution to adjust as a binomial distribution with N parameter. P parameter will be estimated from data

Parameters:

N - N parameter of the distribution

adjustPoisson

public void adjustPoisson(int K)

Sets the distribution to adjust as a Poisson distribution with K mean.

Parameters:

K - mean of the distribution of the distribution

adjustPoisson

public void adjustPoisson()

Sets the distribution to adjust as a Poisson distribution. K parameter (mean) will be estimated from data

adjustGeometric

public void adjustGeometric(double P)

Sets the distribution to adjust as a Geometric distribution with P parameter.

Parameters:

P - parameter of the distribution of the distribution

doTest

public void doTest()

Performs the test

Specified by:

doTest in class StatisticalTest

getQ

public double getQ()

Get Q statistic

Returns:

Q Statistic

getPValue

public double getPValue()

Get p-value of the test

Returns:

p-value computed

printData

public java.lang.String printData()

Prints the data stored in the test

Specified by:

printData in class StatisticalTest

Returns:

Data stored

printReport

public java.lang.String printReport()

Prints a report with the results of the test

Specified by:

printReport in class StatisticalTest

Returns:

Output report