# mathematical expectation

### 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.

## QUIZZES

#### IT’S A WORD OF THE DAY QUIZ BONANZA!

This windfall of words will make you rich with knowledge. Mine your memory on the words from July 27 to August 2!

Question 1 of 7

What does "scattergood" mean?

a person who acts as though he or she knows everything and who dismisses the opinions, comments, or suggestions of others.

a person who spends possessions or money extravagantly or wastefully; spendthrift.

a well-intentioned but naive and often ineffectual social or political reformer.

TAKE THE QUIZ TO FIND OUTAlso called expectation, expected value.

## Origin of mathematical expectation

First recorded in 1830–40

## Words nearby mathematical expectation

mate's rates, matey, mat grass, math, mathematical, mathematical expectation, mathematical induction, mathematical logic, mathematical probability, mathematician, mathematics

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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## British Dictionary definitions for mathematical expectation

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