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Class JSci.maths.statistics.PoissonDistribution

java.lang.Object
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   +----JSci.maths.statistics.ProbabilityDistribution
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           +----JSci.maths.statistics.PoissonDistribution

public final class PoissonDistribution

extends ProbabilityDistribution

PoissonDistribution(double)

Constructs a Poisson distribution.

cumulative(double)

Cumulative Poisson distribution function.

getInterval()

Returns the interval.

inverse(double)

Inverse of the cumulative Poisson distribution function.

probability(double)

Probability density function of a Poisson distribution.

 public PoissonDistribution(double interval)

Constructs a Poisson distribution.

Parameters:

interval - the interval

 public double getInterval()

Returns the interval.

 public double probability(double X)

Probability density function of a Poisson 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 Poisson 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 Poisson distribution function.

Returns:

the value X for which P(x<X)

Overrides:

inverse in class ProbabilityDistribution

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