expected value

noun

1
: the sum of the values of a random variable with each value multiplied by its probability of occurrence
2
: the integral of the product of a probability density function of a continuous random variable and the random variable itself when taken over all possible values of the variable

Examples of expected value in a Sentence

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There’s been widespread agreement among academics and practitioners for decades that investors can expect value stocks to outpace growth over time. Washington Post, 5 Aug. 2019

Word History

First Known Use

1915, in the meaning defined at sense 1

Time Traveler
The first known use of expected value was in 1915

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Cite this Entry

“Expected value.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/expected%20value. Accessed 1 Aug. 2026.

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