mathematical expectation

noun
1.
Mathematics. the product of the probability of the occurrence of an event and the value associated with the occurrence of a given event.
2.
Statistics. the summation or integration, over all values of a variate, of the product of the variate and its probability or its probability density.
Also called expectation, expected value.
Origin
1830-40
British Dictionary definitions for mathematical expectation

mathematical expectation

noun
1.
(statistics) another name for expected value