Module org.bzdev.math

Package org.bzdev.math.rv

Class GaussianRV

java.lang.Object

org.bzdev.math.rv.RandomVariable<Double>

org.bzdev.math.rv.DoubleRandomVariable

org.bzdev.math.rv.GaussianRV

All Implemented Interfaces:

Cloneable, RandomVariableOps<Double>

public class GaussianRV
extends DoubleRandomVariable

Random variable with a Gaussian distribution.

Constructor Summary

Constructors

Constructor	Description
GaussianRV(double mean, double sdev)	Constructor.

Method Summary

Modifier and Type	Method	Description
double	getMean()	Get the mean value for the random-variable.
double	getSDev()	Get the standard deviation for the random variable.
Double	next()	Get the next value for a random variable.
double	next(int n)	Get the sum of multiple values with the number of values an int.
Double	next(long n)	Get the sum of multiple values with the number of values a long.
String	toString()

Methods inherited from class org.bzdev.math.rv.DoubleRandomVariable

getMaximum, getMaximumClosed, getMinimum, getMinimumClosed, parallelStream, parallelStream, rangeTestFailed, rangeTestNeeded, setMaximum, setMinimum, setRequiredMaximum, setRequiredMinimum, spliterator, spliterator, stream, stream, tightenMaximum, tightenMaximumS, tightenMinimum, tightenMinimumS

Methods inherited from class org.bzdev.math.rv.RandomVariable

clone, getCharacteristics

Methods inherited from class java.lang.Object

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

Constructor Details

GaussianRV

public GaussianRV(double mean,
 double sdev)

Constructor.

Parameters:

mean - the mean value of this random variable

sdev - the standard deviation of this random variable

Method Details

getMean

public double getMean()

Get the mean value for the random-variable.

Returns:

the mean value

getSDev

public double getSDev()

Get the standard deviation for the random variable.

Returns:

the standard deviation

next

public Double next()

Description copied from class: RandomVariable

Get the next value for a random variable. In general, each value will be independent of the last.

Specified by:

next in interface RandomVariableOps<Double>

Specified by:

next in class RandomVariable<Double>

Returns:

the next value

next

public double next(int n)

Get the sum of multiple values with the number of values an int. The range check, if any, is applied to the result, not the individual random values that were summed. The implementation is more efficient than one that calls next() n times.

Parameters:

n - the number of values to use

Returns:

the sum of n values of this random variable

next

public Double next(long n)

Get the sum of multiple values with the number of values a long. The range check, if any, is applied to the result, not the individual random values that were summed. The implementation is more efficient than one that calls next() n times.

Parameters:

n - the number of values to use

Returns:

the sum of n values of this random variable

toString

public String toString()

Overrides:

toString in class Object