Mathematics GCSE
Conditional probability
What Conditional probability means in Mathematics GCSE, as defined for Pearson Edexcel.
Definition of Conditional probability
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Reference: Pearson Edexcel
The probability of event A happening, given that B has already occurred, written P(A | B), which restricts the sample space to outcomes where B is true.
Topics that use Conditional probability
- Probability (Pearson Edexcel GCSE)
Related terms
- bias
- Equally likely outcomes
- Event
- Expected frequencies
- Expected frequency
- expected outcomes
- Fair randomising device
- frequency trees
Using Conditional probability in the exam
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