A group of sociology students conducted a practical activity investigating the impact of part-time employment on the study habits of students at their college. They used stratified sampling to select 80 participants, ensuring that different subject areas (STEM, Humanities, and Creative Arts) were proportionally represented.
Outline one strength of using stratified sampling to obtain the participants for this practical activity.
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.