What is an α level? What determines the value of α?
Answer to relevant QuestionsWhat is an “exact” p value? What do you need to look for in bivariate screening (for each combination of categorical and quantitative variables)? In what situations should the Wilcoxon rank sum test be used rather than the independent samples t test? Sigall and Ostrov (1975) did an experiment to assess whether the physical attractiveness of a defendant on trial for a crime had an effect on the severity of the sentence given in mock jury trials. Each of the participants ...Suppose that two raters (rater A and rater B) each assign physical attractiveness scores (0 = not at all attractive to 10 = extremely attractive) to a set of 7 facial photographs. Pearson r is a common index of inter-rater ...
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