# Conditional Probability

Conditional probability of an event is calculated applying the necessary changes to the sample space, when it is known another dependent event has already occurred.

Consider two dependent events that can occur together like the incidences of High blood pressure and diabetes. Suppose it is known that a person is diabetic, and we want to know the probability of the person suffering from High blood pressure as well. The probability in this case is called the conditional probability of the incidence of high blood pressure when the diabetes is already detected.Let us see how the conditional probability is calculated, the rules associated with it and solve few practice problems as well.