TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

a posteriori probability [1 record]

Record 1 2023-07-19

English

Subject field(s)
  • Probability (Statistics)
DEF

... the probability that a hypothesis is true, calculated[,] typically by application of Bayes' theorem[,] in the light of certain relevant observations, including expert knowledge ...

French

Domaine(s)
  • Probabilités (Statistique)
CONT

La probabilité postérieure est celle qui est calculée sur la base de données déjà connues après un processus ou une expérience. La probabilité a posteriori est donc celle qui n'est pas estimée sur la base de conjectures ou de connaissances a priori concernant la distribution d'une probabilité, comme dans la probabilité a priori.

Spanish

Campo(s) temático(s)
  • Probabilidad (Estadística)
CONT

La distinción entre probabilidad a priori y a posteriori es relativa. Una probabilidad a posteriori vuelve a ser a priori en relación a un nuevo experimento. A partir de las probabilidades a priori y la información adicional producto de una muestra, la fórmula de Bayes permite obtener las probabilidades revisadas o a posteriori.

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