A researcher chooses to use a Mann-Whitney U test to analyze the significance of their experimental results. Which level of measurement and type of experimental design must be used for this statistical test?
nominal level data and a repeated measures design
nominal level data and an independent measures design
ordinal level data and a repeated measures design
ordinal level data and an independent measures design
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.