Dr Aris conducted an investigation to see whether an online interactive simulation was more effective for learning orbital mechanics than standard textbook readings. Interested undergraduate physics students signed up after seeing an advertisement on a university department newsletter.
His participants were assigned to one of two conditions:
After two weeks of study, Dr Aris asked a course tutor to classify each participant's level of conceptual understanding as: 'Excellent', 'Satisfactory', or 'Unsatisfactory'.
State one reason why Dr Aris used a chi-squared test to analyse his data.
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.