Chloe and Marcus carried out a study on social influence as part of their A-level Psychology course. They investigated whether Year 12 or Year 13 students are more likely to conform to a peer-led recycling initiative. They approached the first 30 Year 12 and 30 Year 13 students who were available in the college library during a lunch break and asked them to sign a recycling petition.
Table 1 shows the number of Year 12 and Year 13 students who signed or refused to sign the petition.
| Year 12 | Year 13 | |
|---|---|---|
| Number of students who signed the petition | 21 | 14 |
| Number of students who refused to sign the petition | 9 | 16 |
Table 1
Identify the sampling method that Chloe and Marcus used in their study.
638 exam-style questions on Edexcel A Level Psychology Methods. Each one has a worked solution and a mark scheme showing where the marks go.