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Inverse Poisson cumulative distribution function

poissinv(p, mu)

  • The input arrays mu and p should have the same sizes. They contain, respectively, mean values of the inverse CDFs being evaluated, and probabilities at which the inverse CDFs are evaluated.
  • If one of the inputs is a scalar, it would be expanded to match the size of the other input.
  • It returns NaN for negative elements of mu, or elements of p that are <0 or >1.
  • It returns Inf for element of p equal to 1.