Higher January 2020 Paper 2R Q14
14 Max kept a record of the marks he scored in each of the 11 spelling tests he took one term.
Here are his marks.
18 5 7 12 11 18 15 16 17 13 14
Find the interquartile range of the marks.
(3)
| Scheme | Marks |
|---|---|
| 5, 7, 11, 12, 13, 14, 15, 16, 17, 18, 18 | M1 |
| 11 and 17 selected | M1 |
| 6 | A1 |
| (3) | |
| (3 marks) |
Notes
M1: Ordering marks (allow 1 error)
M1: LQ = 11 and UQ = 17 identified