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4 results for “conditional”

Formulae (4)

P(A|B) = \frac{P(B|A)P(A)}{P(B)}

Updates a probability given new evidence.

P(A|B) = \frac{P(A \cap B)}{P(B)}

Probability of A given B has occurred.

P(A|B) = \frac{P(A \cap B)}{P(B)}

Probability of A given that B has occurred.

P(A|B) = \frac{P(B|A)\,P(A)}{P(B)}

Reverses conditional probabilities using prior knowledge.