Conditional probability: Difference between revisions

Revision as of 00:05, 14 December 2003

Revision as of 15:22, 14 December 2003

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[[de:bedingte Wahrscheinlichkeit]][[fr:probabilité conditionnelle]][[it:probabilit`aprobabilità condizionata]]

In [[probability theory]], '''conditional probability''' is the [[probability]] that some [[Probability/Event|event]] ''A'' occurs, knowing that event ''B'' occurs.

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If ''B'' is an event and ''P''(''B'') > 0, then the function ''Q'' defined by ''Q''(''A'') = ''P''(''A''|''B'') for all events ''A'' is a [[probability measure]].

See also [[decision tree]].

Conditional probability is more easily calculated with an [[decision tree]].