Definition of Poisson distribution in English:

Poisson distribution

Syllabification: Pois·son dis·tri·bu·tion
Pronunciation: /pwäˈsôN ˌdistrəˌbyo͞oSHən


  • A discrete frequency distribution that gives the probability of a number of independent events occurring in a fixed time.
    More example sentences
    • In this he was the first to note that events with low frequency in a large population followed a Poisson distribution even when the probabilities of the events varied.
    • Because of the extreme non-normality of these scores, we used a statistical test for two Poisson distributions.
    • The Poisson distribution provides a statistical description of the number of enzymes in the droplet.


named after the French mathematical physicist Siméon-Denis Poisson (1781–1840).

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