de.lmu.ifi.dbs.elki.math.statistics
Class StudentDistribution

java.lang.Object
  de.lmu.ifi.dbs.elki.math.statistics.StudentDistribution

public class StudentDistribution
extends Object

Tabelarizes the values for student distribution.

Author:

Elke Achtert

Field Summary

static double	_0005
static double	_0010
static double	_0050
static double	_0100
static double	_0250
static double	_0500
static double	_1000
static double	_2000
static double	_4000
static double	_6000 Available alpha values.
static double	_8000
static double	_9000
static double	_9500
static double	_9750
static double	_9900
static double	_9950
static double	_9990
static double	_9995
private static Map<Integer,Map<Double,Double>>	tValues Holds the t-values.

Constructor Summary

StudentDistribution()

Method Summary

private static void	put(int n, double[] values) Stores the specified t-values for the given degree of freedom.
static double	tValue(double alpha, int n) Returns the t-value for the given alpha-value and degree of freedom.

Methods inherited from class java.lang.Object

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

Field Detail

_6000

public static double _6000

Available alpha values.

_8000

public static double _8000

_9000

public static double _9000

_9500

public static double _9500

_9750

public static double _9750

_9900

public static double _9900

_9950

public static double _9950

_9990

public static double _9990

_9995

public static double _9995

_4000

public static double _4000

_2000

public static double _2000

_1000

public static double _1000

_0500

public static double _0500

_0250

public static double _0250

_0100

public static double _0100

_0050

public static double _0050

_0010

public static double _0010

_0005

public static double _0005

tValues

private static Map<Integer,Map<Double,Double>> tValues

Holds the t-values.

Constructor Detail

StudentDistribution

public StudentDistribution()

Method Detail

tValue

public static double tValue(double alpha,
                            int n)

Returns the t-value for the given alpha-value and degree of freedom.

Parameters:

alpha - thre alpha value

n - the degree of freedom

Returns:

the t-value for the given alpha-value and degree of freedom

put

private static void put(int n,
                        double[] values)

Stores the specified t-values for the given degree of freedom.

Parameters:

n - the degree of freedom

values - the t-values