Bayes' theorem

noun \ˈbāz-\
variants: or less commonly

Bayes theorem

or less commonly

Bayes's theorem

Definition of Bayes' theorem

  1. :  a theorem about conditional probabilities: the probability that an event A occurs given that another event B has already occurred is equal to the probability that the event B occurs given that A has already occurred multiplied by the probability of occurrence of event A and divided by the probability of occurrence of event B

Origin and Etymology of bayes' theorem

Thomas Bayes †1761 English mathematician

First Known Use: 1830

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a trip made at another's expense

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