ConditionalProbabilityTheorem.md (447B)
1 # Conditional Probability Threoem 2 3 L2 4 5 **Definition:** Conditional probability theroem is $P(A|B) = \frac{P(A \cap B)}{P(B)}$. 6 7 This theroem is used to find the probability of some outcome given another piece of information. This is also referred to as [ConditionalProbabilities](ConditionalProbabilities.md) 8 9 ## Intuition 10 11 The probability that A is true given B is the same as the probability of A and B divided by the overall probability of B.