Conditional Probability

Free SOA Exam P (Probability) lesson in General Probability. 23 min read, ~3,462 words.

Definition:; the denominator is always the conditioning event. Multiplication rule:. in general; equating them is the prosecutor's fallacy. Conditional probability is itself a valid probability measure: complement, inclusion-exclusion, and Bayes all apply within it. The chain rule extends multiplication to sequences of events. Independence makes conditioning irrelevant:; if the association...

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