Poisson distribution

[ pwah-sohn; French pwa-sawn ]

nounStatistics.
  1. a limiting form of the binomial probability distribution for small values of the probability of success and for large numbers of trials: particularly useful in industrial quality-control work and in radiation and bacteriological problems.

Origin of Poisson distribution

1
1920–25; named after S. D. Poisson (1781–1840), French mathematician and physicist

Words Nearby Poisson distribution

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

British Dictionary definitions for Poisson distribution

Poisson distribution

/ (ˈpwɑːsən) /


noun
  1. statistics a distribution that represents the number of events occurring randomly in a fixed time at an average rate λ; symbol P 0 (λ). For large n and small p with np = λ it approximates to the binomial distribution Bi (n,p)

Origin of Poisson distribution

1
C19: named after S. D. Poisson

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for Poisson distribution

Poisson distribution

[ pwä-sôɴ ]


  1. A probability distribution which arises when counting the number of occurrences of a rare event in a long series of trials. It is named after its discoverer, French mathematician and physicist Siméon Denis Poisson (1781-1840).

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