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In probability theory and statistics, the Poisson distribution (/ ˈ p w ɑː s ɒ n /; French pronunciation:) is a discrete probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time if these events occur with a known constant mean rate and independently of the time since the last event. [1]
The (a,b,0) class of distributions is also known as the Panjer, [1] [2] the Poisson-type or the Katz family of distributions, [3] [4] and may be retrieved through the Conway–Maxwell–Poisson distribution. Only the Poisson, binomial and negative binomial distributions satisfy the full form of this
Both the discrete and continuous classes of stable distribution have properties such as infinite divisibility, power law tails and unimodality. The most well-known discrete stable distribution is the Poisson distribution which is a special case. [4] It is the only discrete-stable distribution for which the mean and all higher-order moments are ...
The Poisson distribution in probability theory is named after him. [3] In 1820 Poisson studied integrations along paths in the complex plane, becoming the first person to do so. [14] In 1829, Poisson published a paper on elastic bodies that contained a statement and proof of a special case of what became known as the divergence theorem. [15]
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The shift geometric distribution is discrete compound Poisson distribution since it is a trivial case of negative binomial distribution. This distribution can model batch arrivals (such as in a bulk queue [5] [9]). The discrete compound Poisson distribution is also widely used in actuarial science for modelling the distribution of the total ...
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Download as PDF; Printable version; ... a distribution now called the Poisson distribution. ... (PDF). Philosophical Magazine. Series 6.