FactorialMoment
FactorialMoment[data,r] gives the order r factorial moment μ&_r of data.
FactorialMoment[data,{r1,…,rm}] gives the order {r1,…,rm} multivariate factorial moment μ&_r1, …, rm of data.
FactorialMoment[dist,…] gives the factorial moment of the distribution dist.
FactorialMoment[r] represents the order r formal factorial moment.
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