# expected value

(redirected from Expectation (mathematics))
Also found in: Thesaurus, Financial, Encyclopedia.

## ex·pect·ed value

(ĭk-spĕk′tĭd)
n.
1. A quantity expressing a typical or average value of a random variable.
2. The sum (for discrete variables) or integral (for continuous variables) of the product of a random variable with its probability density function, over its range of values.

## expected value

n
(Statistics) 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
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 expected value - the sum of the values of a random variable divided by the number of valuesstatistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parametersmean, mean value - an average of n numbers computed by adding some function of the numbers and dividing by some function of n
Site: Follow: Share:
Open / Close