Key learning points

1. The probability of an outcome can be found from multiple representations.
2. Each representation can be considered before the most appropriate is chosen.
3. Information from one representation can be displayed using a different representation.

Keywords

• Probability tree - Each branch of a probability tree shows a possible outcome from an event or from a stage of a trial, along with the probability of that outcome happening.

• 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.

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

Common misconception