A psychologist uses random sampling to recruit employees from a distribution centre.
Which of these is a strength of using this sampling method?
It reduces the effect of the psychologist's preferences on who is selected.
It makes the selected employees more willing to complete the study.
It allows the psychologist to choose employees from a range of ages and backgrounds.
It is the quickest and cheapest way to recruit employees for the study.
182 exam-style questions on OCR GCSE Psychology 7.1 Planning Research, covering 7.1.1 Hypotheses, 7.1.2 Variables, 7.1.3 Experimental Designs, 7.1.4 Populations and Sampling, 7.1.5 Ethical issues, and 7.1.6 Dealing with ethical issues and BPS Code. Each one has a worked solution and a mark scheme showing where the marks go.