PriorPhilosophy of HistoryIn Bayesian reasoning, one's initial belief about the probability of a hypothesis before examining specific new evidence.Learn about this termUnit 05: causationPhilosophy of HistoryRelated TermsPosteriorIn Bayesian reasoning, one's updated belief about the probab...Bayesian reasoningA method of updating the probability of a hypothesis based o...Base rateThe underlying frequency or probability of a phenomenon in a...