org.apache.spark.mllib.stat.test

Class ChiSqTestResult

Object

org.apache.spark.mllib.stat.test.ChiSqTestResult

All Implemented Interfaces:

TestResult<Object>

public class ChiSqTestResult
extends Object
implements TestResult<Object>

:: Experimental :: Object containing the test results for the chi-squared hypothesis test.

Constructor Summary

Constructors

Constructor and Description
ChiSqTestResult(double pValue, int degreesOfFreedom, double statistic, String method, String nullHypothesis)

Method Summary

Methods

Modifier and Type	Method and Description
int	degreesOfFreedom() Returns the degree(s) of freedom of the hypothesis test.
String	method()
String	nullHypothesis() Null hypothesis of the test.
double	pValue() The probability of obtaining a test statistic result at least as extreme as the one that was actually observed, assuming that the null hypothesis is true.
double	statistic() Test statistic.
String	toString() String explaining the hypothesis test result.

Methods inherited from class Object

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

Constructor Detail

ChiSqTestResult

public ChiSqTestResult(double pValue,
               int degreesOfFreedom,
               double statistic,
               String method,
               String nullHypothesis)

Method Detail

pValue

public double pValue()

Description copied from interface: TestResult

The probability of obtaining a test statistic result at least as extreme as the one that was actually observed, assuming that the null hypothesis is true.

Specified by:

pValue in interface TestResult<Object>

degreesOfFreedom

public int degreesOfFreedom()

Description copied from interface: TestResult

Returns the degree(s) of freedom of the hypothesis test. Return type should be Number(e.g. Int, Double) or tuples of Numbers for toString compatibility.

Specified by:

degreesOfFreedom in interface TestResult<Object>

statistic

public double statistic()

Description copied from interface: TestResult

Test statistic.

Specified by:

statistic in interface TestResult<Object>

method

public String method()

nullHypothesis

public String nullHypothesis()

Description copied from interface: TestResult

Null hypothesis of the test.

Specified by:

nullHypothesis in interface TestResult<Object>

toString

public String toString()

Description copied from interface: TestResult

String explaining the hypothesis test result. Specific classes implementing this trait should override this method to output test-specific information.

Specified by:

toString in interface TestResult<Object>

Overrides:

toString in class Object