MA36-01 Maths Coming soon
Constructing tree diagrams
MA36-01
This lesson is coming soon.
In this lesson
Draw and complete a tree diagram for two successive events, correctly adjusting the second-stage branch probabilities when an item is not replaced.
What it covers
- Drawing the branch structure for two successive events
- Labelling each branch with its probability
- Checking that probabilities on branches leaving the same node sum to 1
- Adjusting second-stage branch probabilities (numerator and denominator) for events without replacement
Key words
For: AQA GCSE 8300, Edexcel GCSE 1MA1, Eduqas GCSE C300, Edexcel IGCSE 4MA1, OCR GCSE J560
On the specification
| Board | Spec | Statement |
|---|---|---|
| AQA GCSE 8300 | P6 | Enumerate sets and combinations of sets systematically, using tables, grids, Venn diagrams |
| Edexcel GCSE 1MA1 | P6 | Enumerate sets and combinations of sets systematically, using tables, grids, Venn diagrams and tree diagrams |
| Eduqas GCSE C300 | FP6 | Enumerate sets and combinations of sets systematically, using tables, grids, Venn diagrams and tree diagrams |
| Eduqas GCSE C300 | HP6 | Enumerate sets and combinations of sets systematically, using tables, grids, Venn diagrams and tree diagrams |
| Edexcel IGCSE 4MA1 | H6.3A | Draw and use tree diagrams |
| OCR GCSE J560 | 11.02d | Use tree diagrams to enumerate sets and to record the probabilities of successive events (tree frames may be given and in some cases will be partly completed). |
For teachers
This GCSE Maths lesson teaches constructing tree diagrams. By the end, students should be able to draw and complete a tree diagram for two successive events, correctly adjusting the second-stage branch probabilities when an item is not replaced. It works through two worked examples and the mistakes examiners report.