conditional probability

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conditional probability ‎(plural conditional probabilities)

  1. The probability that an event will take place given the restrictive assumption that another event has taken place, or that a combination of other events has taken place. (Mathematically, the definition would be that the conditional probability of B given A is equal to the joint probability of A and B divided by the probability of A.)

Usage notesEdit

  • The "probability of event B given event A" can be represented symbolically as .
  • The "probability of event B given events A and C" can be represented symbolically as .

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