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0580/12 Feb/Mar 2024, Question 11: Stem-and-Leaf Diagrams

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

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The question, in short

Sarah records golf player counts for 14 days. Complete a stem-and-leaf diagram for the data and 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 stem-and-leaf diagram using the 14 given values, with stems 2 to 7 and the key 2|8 meaning 28.

  1. 1In order: 28; 45, 46, 49; 50, 54, 58; 64, 65, 68; 70, 71, 72, 77
  2. 22 | 8, 3 | (none), 4 | 5 6 9, 5 | 0 4 8, 6 | 4 5 8, 7 | 0 1 2 7

Answer| 2 | 8 | | 3 | | | 4 | 5 6 9 | | 5 | 0 4 8 | | 6 | 4 5 8 | | 7 | 0 1 2 7 |

Part (b) · 1 mark

Find the median of the 14 daily golf player counts.

  1. 114 values: median is between the 7th and 8th
  2. 27th = 58, 8th = 64
  3. 3Median = (58 + 64) ÷ 2 = 61

Answer61

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