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Poisson Distribution Fitting

The Poisson distribution is a discrete probability distribution that expresses the probability of a number of events occurring in a fixed period of time if these events occur with a known average rate and independently of the time since the last event.


Poisson Distribution


  • λ is the average number of events per interval
  • e is the number 2.71828... the base of the natural logarithms
  • x takes values 0, 1, 2,...
  • x! = x × (x - 1) × (x - 2) × ... × 2 × 1 is the factorial of x.

We used Accord.Statistics for this calculator

Paste a column data here(Integer 0,1,2,...). In format of excel, text, etc. Each sample in one line.

Calculate the probability of the fitted distribution on: Poisson Distribution Calculator

poisson Distribution:

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