• Conditional probability refers to the chances that some outcome will occur given that another event has occurred.

  • Often stated as the probability of B given A and written as P(B|A), where the probability of B depends on the probability of A.
  • Conditional probability can be opposed to unconditional probability.
  • Probabilities are classified as conditional, marginal or joint.
  • Bayes’ theorem is a mathematical formula used to calculate conditional probability.