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mathematical expectation

American

noun

Mathematics. the product of the probability of the occurrence of an event and the value associated with the occurrence of a given event.
Statistics. the summation or integration, over all values of a variate, of the product of the variate and its probability or its probability density.

mathematical expectation British

noun

statistics another name for expected value

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of mathematical expectation

First recorded in 1830–40

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023