Assertion: poisson distribution | /r/HasProperty | french pronunciation
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text: In probability theory and statistics, the Poisson distribution ( French pronunciation: ​ [pwasɔ̃]; in English often rendered ), named after French mathematician Siméon Denis Poisson, is a discrete probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time or space if these events occur with a known constant mean rate and independently of the time since the last event.