0580/12 Feb/Mar 2021, Question 6: Mean, Median, Mode and Range
Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 4 marks
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The question, in short
Four sisters' heights are given in metres. Find the range in centimetres, then use a five-person range of 18 cm to find two possible brother heights.
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Part (a) · 2 marks
Work out the range of the four given heights, giving the result in centimetres.
- 1Range = 1.65 − 1.53 = 0.12 m
- 2= 12 cm
Answer12
Part (b) · 2 marks
With the brother added, the range of all five heights is 18 cm; find the two possible brother heights.
- 1Brother is the shortest: 1.65 − 0.18 = 1.47 m
- 2Brother is the tallest: 1.53 + 0.18 = 1.71 m
- 3Possible heights: 1.47 m or 1.71 m
Answer1.47 1.71
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