For x being an event mapped by random variable X
For any function f that takes x as an input
For discrete case
Variance, squire of S.D.
The n-th moments of f(x) about point c
The n-th moment of random variable X, simply replace f(x) with p(x)
The n-th central moment of random variable X, the 2-nd central moment is variance
Laplace Transform (Z-Transform)