P a simple charge and f:X->R => expected value of f w.r.t. P,
Ep(f)=Sum(X in
support
(P), f(x)P(x))
If X is a
random variable
:
Ex(f)=Sum(a in
support
(P), f(a)Px(a)) with f:X->R
Ex=Sum(a in
support
(P), aPx(a))
source
jl@crush.caltech.edu
index
random_variable