Question

Probability.
E[X] = Sum: x_i * p(x_i)
E[X^2] = Sum: ( x_i ) ^ 2 * p(x_i)
Is E[X^n] = Sum: ( x_i ) ^ n * p(x_i)

I cant find anything about E[X^n] in the literature.

Answer 1

hey, thats correct!
http://en.wikipedia.org/wiki/Moment_(mathematics)

Answer 2

and here's an example where it is used
http://math.stackexchange.com/questions/918150/calculation-of-the-n-th-moment-of-the-normal-distribution