Key learning points

1. A three event Venn diagram is easier to complete if information from intersecting events is completed first
2. Venn diagrams may show probabilities, frequencies or outcomes
3. A three event Venn diagram may have some (or all) events being mutually exclusive
4. A three event Venn diagram may have events which are subsets of other events

Keywords

• Outcome - An outcome is a result of a trial (e.g. getting heads when flipping a coin once or getting two heads when flipping a coin twice).

• Sample space - A sample space is all the possible outcomes of a trial. A sample space diagram is a systematic way of producing a sample space.

• Event - An event is a subset of a sample space. i.e. An outcome or set of outcomes that may occur from a trial (e.g. flipping a coin twice and getting the same result each time).

• Mutually exclusive - Two or more events are mutually exclusive if they share no common outcome.

• Venn diagram - Venn diagrams are a representation used to model statistical/probability questions. Commonly circles are used to represent events.

Common misconception