CommandsStatsChiPDFOn this pageStatsChiPDF StatsChiPDF (x, n) The StatsChiPDF function returns the chi-squared probability distribution function for the specified value and degrees of freedom as f(x;n)=exp(−x2)xn2−12n2Γ(n2).f(x ; n)=\frac{\displaystyle \exp \left(-\frac{x}{2}\right) x^{\frac{n}{2}-1}}{\displaystyle 2^{\frac{n}{2}} \Gamma\left(\frac{n}{2}\right)} .f(x;n)=22nΓ(2n)exp(−2x)x2n−1. See Also Statistical Analysis, StatsChiPDF, StatsInvChiCDF