4MA1/2HR Jan 2020, Question 14: Finding the Median and Quartiles
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2HR (Higher) · Calculator · 3 marks
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The question, in short
From Max's 11 spelling test marks, 18 5 7 12 11 18 15 16 17 13 14, calculate the interquartile range.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 3 marks
- 1Order the 11 marks: 5, 7, 11, 12, 13, 14, 15, 16, 17, 18, 18
- 2Lower quartile is the 3rd value: 11
- 3Upper quartile is the 9th value: 17
- 4IQR = 17 − 11 = 6
Answer6
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