Basic probability. Single and combined events. Tree diagrams, Venn diagrams, two-way tables. Mutually exclusive and independent events. Conditional probability (Higher). Probability as a fraction, decimal, or percentage.
Tested by
- Edexcel IGCSE 4MA1 AO3 (Handling data; 12–18% of grade) — within content area 6 (Statistics and probability)
- AQA GCSE 8300 AO1 applied to the Probability content domain
- Pearson Edexcel FS Maths L2 — Handling data (partial — at the basic level: probability as fraction or decimal in everyday contexts)
Foundation vs Higher
Foundation: probability scale, single-event probability, combined events with tree diagrams, Venn diagrams.
Higher: conditional probability, probability without replacement, more complex Venn diagram problems.