A researcher aims to investigate the relationship between daily screen time and sleep quality among UK undergraduate students. Which of the following sampling methods will provide the most representative sample of this target population?
A sample of 300300300 undergraduate students randomly selected from the enrollment registers of six different universities across various regions and types of institution in the UK.
A sample of students recruited from the communal study areas of five Russell Group university libraries during the mid-year exam period.
A sample of student members of a national university e-sports league who respond to an online questionnaire about digital habits.
A sample of 300300300 first-year undergraduate psychology students participating in exchange for course credits at a single university in the North of England.
201 exam-style questions on OCR A Level Psychology Planning and conducting research. Each one has a worked solution and a mark scheme showing where the marks go.