4 Rules for working with probability tree diagrams: Multiply the numbers along the branches to get the end results The numbers on any set of branches which all meet together at a point must always add up to 1 Check probability tree diagrams are correct by making sure that the end results add up […]

## Data – Probability

Probability tree diagrams make answering probability questions much easier. Make sure you can draw tree diagrams. Key facts Multiply the numbers along the branches to get end results The numbers on any set of branches that meet at a point must always add up to 1 Check your diagram is correct by checking that the […]