Researchers wished to study the effects of peer mentoring on academic self-efficacy. They planned to survey a stratified sample of 120 16-year-old students from five different local secondary schools. The schools varied significantly in size, with some having a very large enrollment of 16-year-olds and others having a much smaller cohort.
Explain how the researchers could have obtained a stratified sample of 120 students from these five different schools.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.