Expected Value Calculator
Calculate expected value, variance, and standard deviation
E[X] = 2.3
Var(X) = 4.41 Β· SD(X) = 2.1
E[X] = Ξ£xα΅’pα΅’; input probabilities are validated to sum to 1.
Probabilities apply only to the stated model and inputs. Multiplication is used to combine events only when independence is explicitly assumed.