A marine biologist is investigating whether there is an association between the seabed substrate type (Sandy, Rocky, or Muddy) and the species of crab predominantly found there (Shore Crab, Hermit Crab, or Edible Crab). The researcher records the frequencies of crabs observed in a random sample of 180 sightings across different coastal zones.
Identify the most appropriate statistical test for analysing the data collected in this study. Explain three reasons for your choice, referring to the context of this study.
Practise AQA A Level Psychology Inferential testing (A-level only) with exam-style questions for A Level Psychology. 123 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.
