A marine biologist investigates whether there is an association between crab species and their preferred tidal zone. They count the frequency of Fiddler crabs and Hermit crabs found across three tidal zones: high tide, mid tide, and low tide.
State two reasons why a Chi-squared test of association would be an appropriate statistical test to analyze the data from this study.
638 exam-style questions on Edexcel A Level Psychology Methods. Each one has a worked solution and a mark scheme showing where the marks go.