Calculate Poisson distribution probabilities. The Poisson distribution models the number of events occurring in a fixed interval of time or space given a known average rate.
Calculate Poisson distribution probabilities. The Poisson distribution models the number of events occurring in a fixed interval of time or space given a known average rate.
Enter the average number of events per interval
Enter the exact number of events
The Poisson probability equals the average rate (λ) raised to the power of k, multiplied by e⁻ˡ, divided by k factorial (k!).
How this calculator works
The Poisson probability equals the average rate (λ) raised to the power of k, multiplied by e⁻ˡ, divided by k factorial (k!).
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