Statistics › Section C · Probability › Topic C.5
Tree and Venn diagrams
Rules compute probabilities; pictures organise them. The Venn diagram lays two events over one sample space, the tree diagram unfolds a multi-stage experiment into branches - and a drawn problem is half solved.
In this topic
- Two pictures for chance
- Venn diagrams
- Reading union and complement from a Venn diagram
- Worked example: the survey as a Venn diagram
- Tree diagrams
- Worked example: two marbles from the jar, drawn as a tree
- Worked example: one green and one other
- Worked example: a diner's dessert tree
- Choosing the picture
- Common mistakes to avoid
- Key takeaways
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