Poisson Distribution

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Definition: Poisson Distribution

The Poisson distribution is a discrete distribution that takes on the values X = 0, 1, 2, 3. If an event occurs at random in time or space and has a mean number of occurrences “lambda (λ)” in a given interval of time or space and if X is a random variable the number of occurrences in the given interval, then X follows Poisson distribution X – Po (λ).

Eg; the number of car accident on a particular intersection of a road in one day occur at a mean rate of 1 a day

Let X be the random variable “number of accidents/day” then X-Po (1)

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