Expected value

From Lesswrongwiki
Revision as of 08:25, 29 August 2009 by Steven0461 (talk | contribs)
Jump to: navigation, search
Wikipedia has an article about

The "expected value" or "expectation" is the average of all the possible outcomes of an event, weighted by their probability. For example, when you roll a die, the expected value is (1+2+3+4+5+6)/6 = 3.5.

See also