A market researcher wants to survey 100 shoppers at a shopping centre to find out their opinions on a new beverage. To ensure the sample reflects the local demographic, the researcher is instructed to interview exactly 52 females and 48 males, with specified targets for different age groups. The researcher stands near the entrance and approaches passing shoppers until all of these predefined targets are met. Which sampling technique is the researcher using?
Stratified sampling
Quota sampling
Simple random sampling
Opportunity sampling
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.