The gamma distribution is a continuous distribution related to the beta distribution. It arises in processes in which the waiting times between Poisson distributed events are significant. The gamma distribution has one free parameter in this implementation, denoted here as (shape).

 

Complete Gamma Function

 

 

Lower Incomplete Gamma Function

 

 

Upper Incomplete Gamma Function

 

 

Probability Density Function

 

 

Cumulative Distribution Function