Lemmara logoLemmaraWorked solution

0580/22 Feb/Mar 2021, Question 3: Stem-and-Leaf Diagrams

Cambridge IGCSE Mathematics 0580 · Paper 22 (Extended) · Calculator · 3 marks

اقرأ هذا الحل مشروحاً بالعربي ←

The question, in short

Given 14 daily passenger counts, complete a stem-and-leaf diagram with stems 1, 2, 3 and then 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 14 passenger numbers into the correct row of the stem-and-leaf diagram, using the given key.

  1. 1Order the values: 15, 17, 18, 19, 19, 22, 24, 24, 25, 29, 31, 35, 36, 38
  2. 21 | 5 7 8 9 9
  3. 32 | 2 4 4 5 9
  4. 43 | 1 5 6 8

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

Part (b) · 1 mark

Find the median number of passengers from the 14 recorded values.

  1. 114 values, so the median is halfway between the 7th and 8th values
  2. 27th = 24, 8th = 24
  3. 3Median = 24

Answer24

Stuck on a step? Read the free lesson: Stem-and-Leaf Diagrams

Practise more stem-and-leaf diagrams questions

Real 0580 past-paper questions, marked on your working like the exam, with a worked solution for every part.

Practise free on Lemmara

More past-paper questions on stem-and-leaf diagrams

Also searched as: 0580/22/F/M/21 · 0580_m21_qp_22 · 0580 m21 22 · question 3.
Lemmara is an independent study tool, not affiliated with or endorsed by Cambridge International Education. The worked solutions are Lemmara’s own.