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0580/23 Oct/Nov 2023, Question 3: Stem-and-Leaf Diagrams

Cambridge IGCSE Mathematics 0580 · Paper 23 (Extended) · Calculator · 3 marks

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The question, in short

From a stem-and-leaf diagram of plant heights in cm (key 10 | 4 means 10.4 cm), find the median and work out the mean height.

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

Part (a) · 1 mark

Find the median height from the stem-and-leaf diagram.

  1. 113 heights, so the median is the 7th value
  2. 210.4, 10.8, 11.1, 11.3, 11.4, 11.6, 12.2 → median = 12.2 cm

Answer12.2

Part (b) · 2 marks

Work out the mean height from the stem-and-leaf diagram.

  1. 1Count the leaves: 2 + 4 + 4 + 3 = 13 plants.
  2. 2Add the heights: 21.2 + 45.4 + 50.0 + 40.7 = 157.3
  3. 3Mean = 157.3 ÷ 13 = 12.1

Answer12.1

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Also searched as: 0580/23/O/N/23 · 0580_w23_qp_23 · 0580 w23 23 · question 3.
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