ChiSquareDistribution

ChiSquareDistribution[ν] represents a chi-square distribution with ν degrees of freedom.

Examples

Create a chi-square distribution and compute statistics:

Mean[ChiSquareDistribution[5]]
(* 5 *)

Sample from a chi-square distribution:

RandomVariate[ChiSquareDistribution[10], 5]
(* {8.2, 11.5, 9.7, 12.1, 7.3} *)

Please visit the official Wolfram Language Reference for more details.