Foundation June 2019 Paper 2 Q12
12. In November 2018, a survey was completed by all the students in Year 11 at Thomas Bees Academy. Students were asked their age and whether they had any part-time work.
Some of this information is shown in the frequency tree below.

(a) How many of the students were aged 15 in November 2018? [1]
(b) In total, how many of the students do not have any part-time work? [2]
(c) The same survey was repeated in April 2019.
No students had joined or left Year 11.
The number of students aged 15 who had part-time work was only 23.
Explain why this change may have happened. [1]
No students had joined or left Year 11.
The number of students aged 15 who had part-time work was only 23.
Explain why this change may have happened. [1]
| Scheme | Marks | Comments |
|---|---|---|
| 120 | B1 |
| Scheme | Marks | Comments |
|---|---|---|
| (40 – 13 + 85) = 112 | B2 | B1 for sight of 27 or the total of ‘their 40 – 13’ + 85 |
| Scheme | Marks | Comments |
|---|---|---|
| A valid explanation e.g. ‘more of the students are aged 16’ or ‘students are not working as they are revising’ | E1 | |
| (4) |