Expectations

For these questions, you are given brief summaries of research scenarios and specific hypotheses. You need to choose which statistical test is appropriate to analyze the hypothesis given the context of the research scenario. Each scenario is worth 5 marks. 1 mark is for correctly identifying the appropriate statistical test. An additional 4 marks are awarded for justifying your answer with respect to 1. The type of data collected by researchers (i.e., continuous, ordinal, or nominal) 2. Whether researchers are investigating an association/relationship between at least two variables or are instead investigating differences between conditions using the same variable 3. If applicable, the number of conditions and/or factors 4. If applicable, the independence/dependence of observations between conditions You may format your answers as either short paragraphs or bullet lists. Question 6

A personality psychologist was interested in examining whether the prevalence of narcissism differed between people based on the type of pet they own: cats, dogs, or exotic pets. She administered a questionnaire that probed narcissistic personality traits to randomly selected participants. She collapsed the questionnaire items into a continuousvalued composite index of narcissism prevalence. She included biological sex as a factor in her analysis to examine whether biological sex interacts with pet type to influence the prevalence of narcissism. This gave her a 23 experimental design with sex (men, women) and pet type (cat, dog, exotic) as factors.