Factorial moment generating function: Difference between revisions

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wherever this expectation exists. The factorial moment generating function generates the [[factorial moment|factorial moments]] of the [[probability distribution]].
 
Provided the factorial moment generating function exists in an interval around ''t'' = 1, the nth''n''th moment is given by
 
::<math>E\left((xX)_n\right)=M_X^{(n)}(1)=\left.\frac{\mathrm{d}^n}{\mathrm{d}t^n}\right|_{t=1} M_X(t).</math>
 
==Example==