Higher January 2022 Paper 2 Q15

EdexcelHigherCurrent spec3 marksAverages (including IQR)

15 Diyar recorded the distance, in kilometres, that he cycled each day for 11 days.
Here are his results.

8  10  12  13  5  23  21  7  5  16  14

Find the interquartile range of his results.

(3)