Poisson Distributions | Definition, Formula & Examples - Scribbr
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WebMay 13, 2022 · Revised on June 21, 2023. A Poisson distribution is a discrete probability distribution. It gives the probability of an event happening a certain number of times ( k) within a given interval of time or space. The Poisson distribution has only one parameter, λ (lambda), which is the mean number of events.
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