A conservation biologist is conducting a study in a managed woodland to investigate whether there is a correlation between the trunk circumference (in cm) of mature English oak trees and the species richness of epiphytic lichens growing on them.
There are 350 mature English oak trees in the woodland. The biologist decides to select a random sample of 15 of these trees to carry out the survey.
Describe how the biologist could use simple random sampling to select the 15 trees for this study.
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.
