Foundation January 2022 Paper 1R Q19
19 Yusuf sat 8 examinations.
Here are his marks for 5 of the examinations.
68 72 75 77 80
For his results in all 8 examinations
the mode of his marks is 80
the median of his marks is 74
the range of his marks is 16
Find Yusuf’s marks for each of the other 3 examinations.
(4)
| Scheme | Marks |
|---|---|
| B1 | |
| for \(\dfrac{a + 75}{2} = 74\) oe or 73 | M1 |
| for 80 – 16 (= 64) oe | M1 |
| 64, 73, 80 | A1 |
| (4) | |
| (4 marks) |
Notes
B1: for 80
M1: for setting up an equation using the median or for 73
M1: for using the range correctly or for 64
A1: answers can be in any order