0580/12 Oct/Nov 2021, Question 12: Stem-and-Leaf Diagrams
Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 3 marks
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The question, in short
From a stem-and-leaf diagram of 15 women's ages, find the modal age, the median age, and the percentage older than 51 years.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 3 marks
- 1Modal age: 41 appears twice, so mode = 41
- 2Median is the 8th of 15 values: 31, 35, 38, 39, 41, 41, 42, 43 → median = 43
- 3Older than 51: 52, 53, 58 = 3 women
- 43/15 × 100 = 20%
AnswerModal age 41, median age 43, percentage 20
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