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0580/12 May/Jun 2023, Question 8: Stem-and-Leaf Diagrams

Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 3 marks

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The question, in short

Given ten waiting times in minutes, complete a stem-and-leaf diagram with key 0|1 = 1 minute, then find the median.

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

Part (a) · 2 marks

Complete the partially filled stem-and-leaf diagram using the ten listed waiting times, with stems 0, 1 and 2.

  1. 1In order: 1, 3, 4, 5, 5, 8, 11, 12, 23, 24
  2. 20 | 1 3 4 5 5 8
  3. 31 | 1 2
  4. 42 | 3 4

Answer| 0 | 1 3 4 5 5 8 | | 1 | 1 2 | | 2 | 3 4 |

Part (b) · 1 mark

Find the median of the ten waiting times.

  1. 110 values, so median is halfway between the 5th and 6th: 5 and 8
  2. 2Median = (5 + 8) ÷ 2 = 6.5

Answer6.5

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Also searched as: 0580/12/M/J/23 · 0580_s23_qp_12 · 0580 s23 12 · question 8.
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