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noun
StatisticsA discrete frequency distribution which gives the probability of a number of independent events occurring in a fixed time.
- ‘By using recurrence relations for the probability distributions, they show that in several cases the numbers of homozygous and heterozygous loci have independent Poisson distributions.’
- ‘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.’
- ‘Note that the numbers of mutations and gene conversion events per generation follow Poisson distributions.’
- ‘The Poisson distribution provides a statistical description of the number of enzymes in the droplet.’
- ‘Because of the extreme non-normality of these scores, we used a statistical test for two Poisson distributions.’
Origin
Late 19th century: named after the French mathematical physicist Siméon-Denis Poisson( 1781–1840).
Pronunciation
Further reading
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