Interface PoissonDistribution

    • Method Detail

      • getMean

        double getMean()
        Get the mean for the distribution.
        Returns:
        the mean for the distribution.
      • setMean

        @Deprecated
        void setMean​(double p)
        Deprecated.
        as of v2.1
        Set the mean for the distribution. The parameter value must be positive; otherwise an IllegalArgument is thrown.
        Parameters:
        p - the mean
        Throws:
        java.lang.IllegalArgumentException - if p ≤ 0
      • normalApproximateProbability

        double normalApproximateProbability​(int x)
                                     throws MathException
        Calculates the Poisson distribution function using a normal approximation.
        Parameters:
        x - the upper bound, inclusive
        Returns:
        the distribution function value calculated using a normal approximation
        Throws:
        MathException - if an error occurs computing the normal approximation