The likelihood or chance of a given event happening. Often expressed as a fraction, decimal or percentage.

A calculation obtained from an experiment.

A diagram that represents sets and shows where those sets intersect.

A tree diagram is used to determine and visualise all the outcomes and probabilities of 2 or more events

A and B are mutually exclusive events if they cannot occur at the same time. This means that A and B do not share any outcomes

Two events are independent if the occurrence of one event does not affect the chances of the occurrence of the other event.