A researcher stood in the main lobby of a local fitness center during a busy Saturday morning. They approached the first 40 gym-goers who walked through the entrance and asked them to participate in a quick survey about their weekly hydration habits.
Participants completed a short paper questionnaire asking them to estimate their daily water intake (in litres) and rate their daytime energy levels on a scale of 1 to 10. The gym-goers completed the survey on the spot before continuing with their workout. Apart from this, they were left to go about their normal exercise routines.
Which of the following best describes the sampling method used in this study?
Opportunity sampling
Stratified sampling
Systematic sampling
Volunteer sampling
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
