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Class JSci.maths.statistics.BinomialDistribution

java.lang.Object
   |
   +----JSci.maths.statistics.ProbabilityDistribution
           |
           +----JSci.maths.statistics.BinomialDistribution

public final class BinomialDistribution

extends ProbabilityDistribution

BinomialDistribution(int, double)

Constructs a binomial distribution.

cumulative(double)

Cumulative binomial distribution function.

getProbability()

Returns the probability.

getTrials()

Returns the number of trials.

inverse(double)

Inverse of the cumulative binomial distribution function.

probability(double)

Probability density function of a binomial distribution.

 public BinomialDistribution(int trials,
                             double prob)

Constructs a binomial distribution.

Parameters:

trials - the number of trials

prob - the probability

 public int getTrials()

Returns the number of trials.

 public double getProbability()

Returns the probability.

 public double probability(double X)

Probability density function of a binomial distribution.

Parameters:

X - should be integer-valued

Returns:

the probability that a stochastic variable x has the value X, i.e. P(x=X)

Overrides:

probability in class ProbabilityDistribution

 public double cumulative(double X)

Cumulative binomial distribution function.

Parameters:

X - should be integer-valued

Returns:

the probability that a stochastic variable x is less then X, i.e. P(x<X)

Overrides:

cumulative in class ProbabilityDistribution

 public double inverse(double probability)

Inverse of the cumulative binomial distribution function.

Returns:

the value X for which P(x<X)

Overrides:

inverse in class ProbabilityDistribution

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