Distribution Fitting Software & Articles

Poisson Distribution

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- continuous rate of occurence ()



Probability Density Function (PDF)

Poisson distribution PDF

Poisson Distribution Fitting

EasyFit allows to automatically or manually fit the Poisson distribution and 55 additional distributions to your data, compare the results, and select the best fitting model using the goodness of fit tests and interactive graphs. Watch the short video about EasyFit and get your free trial.

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Poisson Distribution Graphs and Properties

EasyFit displays all graphs and properties of the Poisson distribution, presenting the results in an easy to read & understand manner. EasyFit calculates statistical moments (mean, variance etc.), tail probabilities depending on the distribution parameters you specify.

Random Numbers from the Poisson Distribution

You can easily generate random numbers from the Poisson distribution in a variety of ways:

  • directly from EasyFit
  • in Excel sheets using the worksheet functions provided by EasyFitXL
  • in your VBA applications using the EasyFitXL library

Excel Worksheet and VBA Functions

EasyFitXL enables you to use the following functions in your Excel sheets and VBA applications:

Function Name
PoissonPdf Probability Density Function
PoissonCdf Cumulative Distribution Function
PoissonRand Random Numbers
PoissonMean Mean
PoissonVar Variance
PoissonStdev Standard Deviation

Learn more: EasyFit Help on the Poisson distribution