This key facts covers Key Facts 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 2 of 5 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 2 of 5
Practice
12 questions
Recall
4 flashcards
Key Facts
- Two-way Table: Shows frequencies for two categorical variables
- Rows represent one variable, columns represent another
- Joint Frequency: Number in each cell (intersection of row and column)
- Marginal Frequency: Row totals and column totals
- Grand Total: Sum of all frequencies
- Can calculate probabilities directly from the table
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
Instant marking, adaptive difficulty, and 4 spaced repetition flashcards. Free until your GCSEs.
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