# Difference between revisions of "Expected value"

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− | The | + | The "expected value" or "expectation" is the (weighted) average of the possible outcomes of an event. For example, when rolling a die, the expected value is (1+2+3+4+5+6)/6 = 3.5. |

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## Revision as of 22:54, 28 August 2009

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