This exam tips covers Exam Tips within Two-Way Tables for GCSE Mathematics. Revise Two-Way Tables in Probability for GCSE Mathematics with 12 exam-style questions and 4 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 4 of 5 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 4 of 5
Practice
12 questions
Recall
4 flashcards
Exam Tips
- Always check totals - row totals + column totals should equal grand total
- Read carefully - distinguish between "and" (joint) vs "or" (marginal)
- For conditional probability - use the relevant row or column as the denominator
- Show your working - write probabilities as fractions first
- Check your answer - probability should be between 0 and 1
Keep building this topic
Read this section alongside the surrounding pages in Two-Way Tables. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Two-Way Tables
A two-way table shows information about 80 students. It shows whether they study French or Spanish, and whether they are in Year 10 or Year 11. The total number of Year 10 students who study French is the value found by looking at which intersection?
Explain why the denominator changes when finding conditional probability from a two-way table.
Quick Recall Flashcards
12 questions on Two-Way Tables — practise free
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