| Definition | Term |
| Individual outcomes are uncertain, but there is a regular distribution of outcomes in a large number of repetitions. | |
| The proportion of times an outcome of an event occurs in a long trial of repetitions…a long-term relative frequency | |
| A list of all the possible outcomes of an event | |
| The occurrence or happening in question | |
| The end result of the event. | |
| A mathematical description of a random phenomenon consisting of 2 parts: a sample space, S, and a way of assigning probabilities to events | |