Foundation November 2024 Paper 2 Q5
5 The table shows information about the shoe sizes of the 25 children in a nursery class.
| Shoe size | Frequency |
|---|---|
| 18 | 2 |
| 19 | 4 |
| 20 | 5 |
| 21 | 6 |
| 22 | 8 |
Find the median shoe size.
(2)
| Scheme | Marks |
|---|---|
| (25 + 1) ÷ 2 (=13) or 18,18,19,19,19,19,20,20,20,20,20,21,21… etc with no more than one error 2, 6, 11, 17…. or 8, 14 | M1 |
| Correct answer scores full marks (unless from obvious incorrect working) Answer: 21 | A1 |
| (2) | |
| (2 marks) |
Notes
M1: For a correct method to find position of median; allow 12.5
or a list – need to go up to 2nd 21 or down to this 2nd 21
or adding the frequencies cumulatively
A1: from correct working