Poisson Distribution Probability Calculator

Average Events Per Unit Time:
Number of Events:
Poisson Distribution:
Cumulative Distribution:


Poisson distribution is a simple probability model in statistics. It describes a random events in a certain time or space. For example, the chance to meet a deer when you are driving in an highway of a forest area is a poisson distribution event.

Poisson Distribution Probability Formula:
   P = eλn/n!

Where:

   P: Poisson Distribution Probability
   λ: Average Events per Unit Time
   n: Number of Events



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