Probability
NEW: Probability
Revise probability vocabulary, the probability scale and finding the probability of an event. This guide contains a quiz and exam-style questions.

NEW: Relative frequency
Revise how to calculate relative frequency to solve probability problems. This guide contains a quiz and exam-style questions.

NEW: Showing outcomes
Revise showing outcomes using tree diagrams, two-way and sample-space tables. For Higher tier revise using the product rule. This guide contains a video and quizzes.

NEW: Tree diagrams
Revise tree diagrams and finding probabilities of independent and dependent events. For Higher tier revise conditional probability. This guide contains interactive activities.

NEW: Venn diagrams
Revise set notation, creating and interpreting Venn diagrams, and using them to solve problems. This guide contains a quiz and exam-style questions.

NEW: Higher – Solving problems using Venn diagrams
Revise solving probabilities and conditional probabilities using a Venn diagram in this Higher tier guide. This guide contains a quiz and exam-style questions.

Probability - AQA
Probabilities can be written as fractions, decimals or percentages on a scale from 0 to 1. Knowing basic facts about equally likely outcomes can help to solve more complicated problems.

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