Origin of expected value

First recorded in 1945–50
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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 constantAlso called: mathematical expectation
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