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Smiles and Leniency
David Lane of Rice University has created this case study addresses the question: "Will a smiling person accused of a crime be treated more leniently than one who is not smiling? If so, does the type of smile make a difference?" It concerns the following concepts: quantile/boxplots, contrasts among means, Dunnett's test, and Bonferroni correction. Lane addresses the background of the experiment, experimental design, materials, descriptive statistics, inferential statistics, and the interpretation of the data.
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