Bayes’ theorem

Bayes’ theorem

In statistics, a formal expression of the probability that one event will occur, given that another event occurs when the usual probabilities of the events are known. In written form, the probability of any event A given the occurrence of another event B, P(A/B), is given by the formula

where P(A) is the prior probability of event A, P(B) is the prior probability of event B, and P(B/A) is the prior probability