com.singularsys.extensions.statistical.distributions

Class BinomialDist

java.lang.Object

com.singularsys.jep.functions.PostfixMathCommand

com.singularsys.jep.functions.NaryFunction

com.singularsys.extensions.statistical.distributions.BinomialDist

All Implemented Interfaces:

PostfixMathCommandI, java.io.Serializable

public class BinomialDist
extends NaryFunction

The binomial distribution function. Works like Excel's BINOMDIST function. binomdist(x,n,p) gives the binomial distribution for x successes in n trial, with the probability of each trial being p. A four argument form binomdist(x,n,p,1) gives the cumulative distribution function.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand

curNumberOfParameters, name, NaN, numberOfParameters

Constructor Summary

Constructors

Constructor and Description
BinomialDist() Three argument version
BinomialDist(boolean fourArgVersion) Four argument version like Excel's BINOMDIST function.

Method Summary

Modifier and Type	Method and Description
static double	bidist(int x, int n, double p)
static double	cdf(int x, int n, double p)
java.lang.Object	eval(java.lang.Object[] args) Evaluate the function

Methods inherited from class com.singularsys.jep.functions.NaryFunction

run

Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand

asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, checkNumberOfParameters, getName, getNumberOfParameters, setCurNumberOfParameters, setName, toString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

BinomialDist

public BinomialDist()

Three argument version

BinomialDist

public BinomialDist(boolean fourArgVersion)

Four argument version like Excel's BINOMDIST function.

Parameters:

fourArgVersion -

Method Detail

eval

public java.lang.Object eval(java.lang.Object[] args)
                      throws EvaluationException

Description copied from class: NaryFunction

Evaluate the function

Specified by:

eval in class NaryFunction

Parameters:

args - arguments to the function

Returns:

value returned by the function

Throws:

EvaluationException - if the calculation cannot be performed

bidist

public static double bidist(int x,
                            int n,
                            double p)

cdf

public static double cdf(int x,
                         int n,
                         double p)