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0580/11 Oct/Nov 2023, Question 9: Stem-and-Leaf Diagrams

Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Calculator · 3 marks

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The question, in short

From a stem-and-leaf diagram of race times in minutes for 15 people, find three summary statistics of the data.

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

Part (a) · 1 mark

Find the mode of the times shown in the stem-and-leaf diagram.

  1. 127 appears three times: mode = 27 minutes

Answer27

Part (b) · 1 mark

Find the range of the times shown in the stem-and-leaf diagram.

  1. 1Range = 31 − 16 = 15 minutes

Answer15

Part (c) · 1 mark

Find the median of the times shown in the stem-and-leaf diagram.

  1. 115 values, median is the 8th: 16, 16, 17, 21, 23, 23, 24, 25
  2. 2Median = 25 minutes

Answer25

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Also searched as: 0580/11/O/N/23 · 0580_w23_qp_11 · 0580 w23 11 · question 9.
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