Empirical, Subjective and Priori Probability

There are three types of probabilities:

Empirical Probability	Based on observed or historical data.
Subjective Probability	Based on an individual’s judgement about the probability of occurrence of an event. The probability of an event is determined by an individual, based on that person’s past experience, personal opinion, and/or analysis of a particular situation.
Priori Probability	Based on prior knowledge. Involves deductive reasoning.