expected value


noun

Statistics, Mathematics. mathematical expectation.

Origin of expected value

First recorded in 1945–50

British Dictionary definitions for expected value

expected value

noun

statistics the sum or integral of all possible values of a random variable, or any given function of it, multiplied by the respective probabilities of the values of the variable. Symbol: E (X). E (X) is the mean of the distribution; E (X–c) = E (X)– c where c is a constant Also called: mathematical expectation