Higher June 2023 Paper 1 Q10
10 Here are the test marks of 15 students.
7 10 14 15 16 17 18 19 20 20 23 25 30 39 40
Find the interquartile range of these marks.
(2)
| Scheme | Marks |
|---|---|
| Correctly identifying 15 and 25 | M1 |
| Correct answer scores full marks (unless from obvious incorrect working) Answer: 10 | A1 |
| (2) | |
| (2 marks) |
Notes
M1: could be clearly shown in list (condone 19 also being indicated)