GammaDistribution

GammaDistribution[α, β] represents a gamma distribution with shape parameter α and scale parameter β.

Examples

Generate random samples:

RandomVariate[GammaDistribution[2, 1], 5]

Mean and variance:

{Mean[GammaDistribution[α, β]], Variance[GammaDistribution[α, β]]}
(* {α β, α β^2} *)

Please visit the official Wolfram Language Reference for more details.