expected value

noun

1. Statistics, Mathematics. mathematical expectation.

expected value

noun

1. 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 calledmathematical expectation

Word History and Origins

Origin of expected value¹

First recorded in 1945–50

Example Sentences

Trump Media’s expected value of $5 billion at the IPO swore at common sense, or at any traditional standard of securities valuation.

From Los Angeles Times

"But quantum physics says that there are always certain fluctuations. The fluctuations, i.e. the deviations from the expected value, are closely related to the temperature."

From Science Daily

"We understand that signaling much more than this has no expected value given so much uncertainty that exists, both globally and locally," he said.

From Reuters

The researchers found that this shift to the surebet occurred mostly for the choices near the boundary where the expected value of the lottery was only slightly higher than the value of the surebet.

From Science Daily

"If I really think that I should be trying to maximize expected values, that probably implies substantially riskier strategies than what seems intuitively right," he said in the June 4, 2020, podcast.

From Reuters