Expected value
id:
expected-value-168-15234413
title:
Expected value
text:
In probability theory, the expected value is a generalization of the weighted average. Informally, the expected value is the arithmetic mean of the possible values a random variable can take, weighted by the probability of those outcomes. Since it is obtained through arithmetic, the expected value sometimes may not even be included in the sample data set; it is not the value you would "expect" to get in reality. The expected value of a random variable with a finite number of outcomes is a weight
brand slug:
wiki
category slug:
encyclopedia
description:
Average value of a random variable
original url:
https://en.wikipedia.org/wiki/Expected_value
date created:
2001-08-08T18:09:02Z
date modified:
2024-08-31T16:21:36Z
main entity:
{"identifier":"Q200125","url":"https://www.wikidata.org/entity/Q200125"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/3/3a/Standard_deviation_diagram_micro.svg","width":400,"height":200}
fields total:
13
integrity:
16