Box Plot and Quartiles Visualization

Part of Range & IQR · Section 5 of 8

DiagramUnit: StatisticsGCSE
Dataset: 12, 15, 18, 22, 24, 28, 30, 35, 38 10 15 20 25 30 35 40 Q1=16.5 Q2=24 Q3=32.5 12 15 18 22 24 28 30 35 38 Min Max IQR = 32.5 - 16.5 = 16 Range = 38 - 12 = 26

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.

Practice questions for Range & IQR

The range of a set of data is calculated by:

  • A. Adding all the values together
  • B. Dividing the total by the number of values
  • C. Subtracting the smallest value from the largest value
  • D. Finding the middle value when ordered
1 markfoundation

Explain why the interquartile range (IQR) is sometimes preferred over the range as a measure of spread.

2 marksstandard

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

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