This diagram covers Box Plot and Quartiles Visualization within Range & IQR for GCSE Mathematics. Revise Range & IQR in Statistics for GCSE Mathematics with 12 exam-style questions and 20 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 5 of 8 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.
Box Plot and Quartiles Visualization
Practice questions for Range & IQR
The range of a set of data is calculated by:
Explain why the interquartile range (IQR) is sometimes preferred over the range as a measure of spread.
Quick recall flashcards
What is the range?
The range is the difference between the highest value and the lowest value in a dataset.
Range = Highest value - Lowest value
What are quartiles?
Quartiles are values that divide an ordered dataset into four equal parts:
- Q1 (Lower quartile): 25% below
- Q2 (Median): 50% below
- Q3 (Upper quartile): 75% below