rvl.stat
Class Stat

java.lang.Object
  rvl.stat.Stat

public class Stat
extends java.lang.Object

Basic statistics calculations

Constructor Summary

Stat()

Method Summary

static double	mean(double[] x)
static double[]	meanSD(double[] x)
static double	sd(double[] x)
static double	sd(double[] x, double mean)

Methods inherited from class java.lang.Object

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

Constructor Detail

Stat

public Stat()

Method Detail

mean

public static double mean(double[] x)

Returns:

the mean of x[]

sd

public static double sd(double[] x,
                        double mean)

Returns:

the SD of x[], given the mean is already calculated

sd

public static double sd(double[] x)

Returns:

sd of x[]

meanSD

public static double[] meanSD(double[] x)

Returns:

an array of two elements with the mean and SD of x[]