com.quadrique.jbuildingblocks.core.math
Class JbbStatistics

java.lang.Object
  com.quadrique.jbuildingblocks.core.math.JbbStatistics

public class JbbStatistics
extends Object

A Utility class that provides some simple statistics functions.

Method Summary

double	getAvg(ArrayList<Number> series)
void	getHistogram(Integer[] series, Integer[][] zValues)
double	getMax(ArrayList<Number> series)
double	getMin(ArrayList<Number> series)
double	getPercentage(double zTotal, double zValue)
double	getPercentage(int zTotal, int zValue)
double	getPercentage(long zTotal, long zValue)
double	getPercentage(Number zTotal, Number zValue)
double	getStdDev(ArrayList<Number> series)
double	getStdDev(ArrayList<Number> series, double zAvg) if you already have the average, use this method
static JbbStatistics	newInstance()

Methods inherited from class java.lang.Object

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

Method Detail

newInstance

public static JbbStatistics newInstance()

getMin

public double getMin(ArrayList<Number> series)

getMax

public double getMax(ArrayList<Number> series)

Parameters:

series -

Returns:

double

getAvg

public double getAvg(ArrayList<Number> series)

Parameters:

series -

Returns:

double

getStdDev

public double getStdDev(ArrayList<Number> series)

Parameters:

series -

Returns:

double

getStdDev

public double getStdDev(ArrayList<Number> series,
                        double zAvg)

if you already have the average, use this method

getHistogram

public void getHistogram(Integer[] series,
                         Integer[][] zValues)

Parameters:

series -

zValues -

getPercentage

public double getPercentage(Number zTotal,
                            Number zValue)

Parameters:

zTotal -

zValue -

Returns:

double

getPercentage

public double getPercentage(double zTotal,
                            double zValue)

Parameters:

zTotal -

zValue -

Returns:

double

getPercentage

public double getPercentage(long zTotal,
                            long zValue)

Parameters:

zTotal -

zValue -

Returns:

double

getPercentage

public double getPercentage(int zTotal,
                            int zValue)

Parameters:

zTotal -

zValue -

Returns:

double