French word for fish, also referring to the Poisson distribution in statistics, named after mathematician Siméon Denis Poisson. Used in probability theory for modeling rare events.
From Old French poisson, derived from Latin piscis meaning 'fish.' The statistical term honors French mathematician Poisson (1781-1840), whose surname ironically means 'fish' - a fitting coincidence for someone who studied the distribution of rare events.
It's wonderfully ironic that the Poisson distribution, used to predict rare events like radioactive decay or meteor strikes, is named after a mathematician whose surname means 'fish' - making it perhaps the only statistical concept that sounds like a French dinner order.
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