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ProbabilityHigh Exam FrequencyAQAEdexcelOCRWJEC

Tree Diagrams

Revise Tree Diagrams in Probability for GCSE Mathematics with 15 exam-style questions and 20 flashcards. This is a high-frequency exam topic, so students should expect to explain it clearly under timed conditions.

Study this topic

1

Branching Out into Probability

Introduction2

Key Facts

Key Facts3

Basic Tree Diagram Structure

Diagram4

Step-by-Step Method

Deep Dive5

Exam Tips

Exam Tips6

Common Tree Diagram Types

Key Facts7

Knowledge Organiser: Tree Diagrams

Summary

Sample Flashcards

What is a tree diagram?
A visual representation of all possible outcomes in multi-stage events
What does each branch in a tree diagram represent?
A possible outcome at that stage of the experiment

Exam questions for Tree Diagrams

A fair coin is flipped twice. In a tree diagram, what must the probabilities on the branches from the same point always add up to?

  • A. 0
  • B. 1
  • C. The number of branches
  • D. The total number of outcomes
1 markfoundation

Explain the two key rules used when calculating probabilities from a tree diagram. Your answer should refer to both the multiplication rule and the addition rule.

3 marksstandard

Want more? See all GCSE Mathematics exam questions by paper with full model answers and mark schemes.

15

exam-style questions

20

revision flashcards

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