4MA1/1HR Jun 2024, Question 10: Finding the Median and Quartiles
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1HR (Higher) · Calculator · 2 marks
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The question, in short
For the 11 listed goal totals, calculate the interquartile range of the data set.
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Solution · 2 marks
- 1Order the data: 0, 1, 2, 2, 3, 4, 4, 6, 7, 9, 11
- 2Find median position: (11 + 1) / 2 = 6th value → 4
- 3Lower quartile (Q1) is the median of the first half: 3rd value → 2
- 4Upper quartile (Q3) is the median of the second half: 9th value → 7
- 5Interquartile range = Q3 − Q1 = 7 − 2 = 5
Answer5
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