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0580/11 Oct/Nov 2025, Question 14: Stem-and-Leaf Diagrams

Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Non-calculator · 4 marks

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The question, in short

Use the 12 given ages in months to complete a stem-and-leaf diagram, count children older than 2 years, and show the median equals 12.5.

Summarised in our own words. Use the official paper for the exact wording and the diagram.

Part (a) · 2 marks

Fill in the stem-and-leaf diagram with the 12 ages, using the given key where 1|7 means 17 months.

  1. 1Ordered ages: 8, 9, 10, 11, 12, 12, 13, 17, 22, 26, 27, 28
  2. 20 | 8 9
  3. 31 | 0 1 2 2 3 7
  4. 42 | 2 6 7 8

Answer| 0 | 8 9 | | 1 | 0 1 2 2 3 7 | | 2 | 2 6 7 8 |

Part (b) · 1 mark

Count how many of the 12 children are over 2 years old.

  1. 12 years = 24 months; ages over 24: 26, 27, 28
  2. 23 children

Answer3

Part (c) · 1 mark

Using the listed ages, show that the median is 12.5.

  1. 112 values, so the median is halfway between the 6th and 7th values: 12 and 13
  2. 2Median = (12 + 13)/2 = 12.5

Answer(12 + 13)/2 leading to 12.5

Stuck on a step? Read the free lesson: Stem-and-Leaf Diagrams

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Also searched as: 0580/11/O/N/25 · 0580_w25_qp_11 · 0580 w25 11 · question 14.
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