Higher January 2021 Paper 2 Q12

EdexcelHigherCurrent spec2 marksAverages (including IQR)

12 15 people were asked how long, in minutes, they had been waiting for a bus.

Here are the results.

2 3 3 4 5 6 6 8 9 10 11 13 14 15 18

Find the interquartile range of these times.

(2)

Scheme	Marks
13 − 4	M1
Correct answer scores full marks (unless from obvious incorrect working) Answer: 9	A1
	(2)
	(2 marks)