# Poisson distribution

[pwah-sohn; French pwa-sawn] /pwɑˈsoʊn; French pwaˈsɔ̃/
noun, Statistics.
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
1920-1925
1920-25; named after S. D. Poisson (1781-1840), French mathematician and physicist
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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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 P0(λ). For large n and small p with np = λ it approximates to the binomial distribution Bi(n,p)
Word Origin
C19: named after S. D. Poisson
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Poisson distribution in Science
 Poisson distribution   (pwä-sôɴ')    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).
The American Heritage® Science Dictionary
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Poisson distribution in Technology

mathematics
A probability distribution used to describe the occurrence of unlikely events in a large number of independent trials.
Poisson distributions are often used in building simulated user loads.
[Formula?]
(2003-03-18)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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### Difficulty index for Poisson distribution

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### Word Value for Poisson

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