What is the difference between a directional and a non directional significance test?
Answer to relevant QuestionsWhy do reported or "nominal" p values often seriously underestimate true risk of Type I error? Briefly discuss what information do you look at to evaluate whether an effect obtained in an experiment is large enough to have “practical” or “clinical” significance? What is a null hypothesis? An alternative hypothesis? What potential problems should you look for in the univariate distributions of categorical and quantitative scores? Aronson & Mills (1959) did an experiment to see whether people's liking for a group is influenced by the severity of initiation. They reasoned that when people willingly undergo a severe initiation in order to become a ...
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