Poisson
Counts independent arrivals in a fixed exposure; a sparse-event limit of the binomial.
Probability mass
P(X=k) = e⁻λ λᵏ / k!discrete
Poisson in motion
Support{0, 1, …}
Mean5
Variance5
ConnectionsWhere the poisson
Where the poisson
comes from — and leads.
Every link is one of the four moves from the relationship map: special cases, transformations, limits, and Bayesian conjugacy.
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See every connection at once.
The relationship map draws the whole backbone — special cases, transformations, limits, and conjugacies — in one guided view.
Open the map