Dictionary

Poisson distribution

Poisson distribution

noun Pois·son distribution \pwä-ˈsōⁿ-\

Definition of POISSON DISTRIBUTION

:  a probability density function that is often used as a mathematical model of the number of outcomes obtained in a suitable interval of time and space, that has its mean equal to its variance, that is used as an approximation to the binomial distribution, and that has the form is the mean and x takes on nonnegative integral values

Origin of POISSON DISTRIBUTION

Siméon D. Poisson †1840 French mathematician
First Known Use: 1922

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