Experimental Probabilities: Preliminary Simulations Experimental Probability Probabilities help us to predict the likelihood of uncertain occurrences. Basically, the probability of a particular outcome (e.g. a chip landing in the $10,000 slot) is a number that tells us the relative frequency with which we expect the outcome to occur. The experimental probability, denoted P(event), that an event will occur is computed by making many repetitions of an experiment and determining the relative frequency that the event occurs, so that P(event) = number of times event occurs / number of repetitions, that is .
