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probability
| Term | Definition |
|---|---|
| Impossible | An event that cannot happen; its probability is zero. |
| Unlikely | An event that has a low chance of occurring but is not impossible. |
| Equally Probable | Events that have the same likelihood of happening. |
| Likely | An event that has a high chance of occurring. |
| Certain: | An event that will definitely happen; its probability is one. |
| Probability: | A measure of how likely an event is to occur, usually expressed as a number between 0 and 1. |
| Complement | The set of all outcomes in an experiment that are not the event in question; the probability of the complement is 1 minus the probability of the event. |