Foundation June 2024 Paper 1 Q13
13 50 students are asked how many books they have read this month.
The table shows the results.
| Number of books | Frequency |
|---|---|
| 0 | 11 |
| 1 | 8 |
| 2 | 10 |
| 3 | 8 |
| 4 | 7 |
| 5 | 6 |
| Total | 50 |
Work out the mean number of books read this month by the 50 students. [3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 2.2 | 3 | M1 for \([0 \times 11]\), \(1 \times 8\), \(2 \times 10\), \(3 \times 8\), \(4 \times 7\), \(5 \times 6\) | May be implied by [0,] 8, 20, 24, 28, 30 or 110 For M1 allow one error or omission in calculation or answers |
| M1 for their \(\sum\)(books \(\times\) freq) \(\div\) 50 | Must be a sum of products | ||