4MA1/1HR Jun 2022, Question 13: 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
From 15 ordered baseball run totals, work out the interquartile range of the runs scored.
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Solution · 2 marks
- 1Identify the median position: (15 + 1) / 2 = 8th value, which is 7
- 2Lower quartile position: (15 + 1) / 4 = 4th value, which is 3
- 3Upper quartile position: 3 × (15 + 1) / 4 = 12th value, which is 12
- 4Interquartile range = upper quartile − lower quartile = 12 − 3
- 59
Answer9
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