Gamma Distribution

Gamma Statistical Distribution


General Characteristics

  • The Gamma distribution is a two-parameter family of continuous probability distributions.
  • Some statistical distributions are special cases of Gamma distribution including; Erlang distribution, Exponential distribution and Chi-Squared distribution.



Specific Characteristics

Key Measures:

Shape & Scale


Range of values:

0 < x < ∞



Mean = Shape * Scale


Standard Deviation, SD:

SD = √[Shape * Scale]



Gamma distributions can be used; to calculate the time required to complete a task & also to calculate inter-arrival time, as well as time taken between failures.

Gamma Statistical Distribution – Statistical Distributions
Education | thetqweb