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0580/12 Oct/Nov 2023, Question 7: Stem-and-Leaf Diagrams

Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 4 marks

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The question, in short

Using 16 daily dress-sale counts, complete a stem-and-leaf diagram, then state the mode and find the median.

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

Part (a) · 2 marks

Place each of the 16 given values into the correct row of the stem-and-leaf diagram, using the key 2|4 = 24.

  1. 1Sort into stems and order the leaves
  2. 20 | 6 9
  3. 31 | 4 5 6 6 6 7 8
  4. 42 | 0 2 4 4 7
  5. 53 | 2 7

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

Part (b) · 1 mark

Write down the mode of the 16 dress-sale numbers.

  1. 116 appears three times: mode = 16

Answer16

Part (c) · 1 mark

Find the median of the 16 dress-sale numbers.

  1. 116 values: median is between the 8th and 9th, 17 and 18
  2. 2Median = (17 + 18) ÷ 2 = 17.5

Answer17.5

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Also searched as: 0580/12/O/N/23 · 0580_w23_qp_12 · 0580 w23 12 · question 7.
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