An agricultural researcher is investigating the sugar content (measured in degrees Brix) of apples in a commercial orchard. The orchard contains 1,200 apple trees, split across three distinct varieties: Royal Gala (600 trees), Honeycrisp (400 trees), and Braeburn (200 trees). The researcher intends to select a sample of 60 trees to perform the analysis.
Identify an appropriate sampling technique for this investigation and justify your choice.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.