Maxima Function
kurtosis_chi2 (n)
Returns the kurtosis coefficient of a Chi-square random variable Chi^2(n), with n>0.
The Chi^2(n) random variable is equivalent to the Gamma(n/2,2), therefore when Maxima has not enough information to get the result, a noun form based on the gamma kurtosis coefficient is returned.
(%i1) load (distrib)$ (%i2) kurtosis_chi2(n); n (%o2) kurtosis_gamma(-, 2) 2 (%i3) assume(n>0)$ kurtosis_chi2(n); 12 (%o4) -- n