javanpst.tests.oneSample.wilcoxonTest

Class WilcoxonTest

java.lang.Object

javanpst.tests.StatisticalTest

javanpst.tests.oneSample.wilcoxonTest.WilcoxonTest

public class WilcoxonTest
extends StatisticalTest

The Wilcoxon Signed-Ranks test This test is proposed for use with paired-sample data in making inferences concerning the value of the median of the population of differences. Zero differences are shared between both samples. If there is a odd number of them, one is discarded. Ties are handled by the midrank method. An exact p-value (for p-values equal or lower than 0.2, and sample size equal or lower than 50) is provided. An asymptotic approximation to the normal distribution is also provided. Furthermore, this version of the test also provides two confidence intervals (at 0.90 and 0.95 levels) for the location of the median of the differences, through the use of Walsh averages.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
void	clearData() Clears the data stored in the test
void	doTest() Performs the test
double	getDoublePValue() Get double tail p-value
double	getExactDoublePValue() Get double tail exact p-value
double	getExactLeftPValue() Get left tail exact p-value
double	getExactRightPValue() Get right tail exact p-value
double	getLeftPValue() Get left tail p-value
double	getRightPValue() Get right tail p-value
double	getRMinus() Get R- statistic of the second sample
double	getRPlus() Get R+ statistic of the first sample
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

WilcoxonTest

public WilcoxonTest()

Default builder

WilcoxonTest

public WilcoxonTest(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.

doTest

public void doTest()

Performs the test

Specified by:

doTest in class StatisticalTest

getRPlus

public double getRPlus()

Get R+ statistic of the first sample

Returns:

R+ statistic

getRMinus

public double getRMinus()

Get R- statistic of the second sample

Returns:

R- statistic

getExactLeftPValue

public double getExactLeftPValue()

Get left tail exact p-value

Returns:

left tail p-value computed

getExactRightPValue

public double getExactRightPValue()

Get right tail exact p-value

Returns:

right tail p-value computed

getExactDoublePValue

public double getExactDoublePValue()

Get double tail exact p-value

Returns:

double tail p-value computed

getLeftPValue

public double getLeftPValue()

Get left tail p-value

Returns:

left tail p-value computed

getRightPValue

public double getRightPValue()

Get right tail p-value

Returns:

right tail p-value computed

getDoublePValue

public double getDoublePValue()

Get double tail p-value

Returns:

double tail 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