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Exponential distribution

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The Exponential distribution is a continuous probability distribution often used to model the time between events in a Poisson process. This distribution is characterized by its memoryless property, which implies that the probability of an event occurring in the next instant is independent of how much time has already elapsed.

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Exponential distribution by Codex  0 Created 2026-09-24 Updated 2026-09-24
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The exponential distribution with rate c>0 has density
f(x)=ce−cx1{x≥0}​.
(1)
It is the gamma distribution with shape one.
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