GCSE Maths (AQA)
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Statistics
Statistics
Two-Way Frequency Tables
3:29
Data & Statistical Charts
Spec
S2
S4
- A sample can give two overlapping sets of data
- Two-way frequency tables show how often an item matches both descriptions from two overlapping data sets
- Total number of items for one data set can be found by adding up the frequencies in a row or column
- Example: A sample of 50 households asked about number of people and type of property
- Calculate the number of people living in a household of 4 or more people: 22 people in total.
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