Construct an example of a situation in which an outlier deflates the correlation between two variables. Draw a scatterplot.
Answer to relevant QuestionsAccording to The Wellness Encyclopedia (University of California, 1991, p. 17): “Alcohol consumed to excess increases the risk of cancer of the mouth, pharynx, esophagus, and larynx. These risks increase dramatically when ...Construct an example for which correlation between two variables is masked by grouping over a third variable. News Story 12: “Working nights may increase breast cancer risk.” Peruse journal articles, and find two examples of scatterplots for which the authors have computed a correlation that you think is misleading. For each case, explain why you think it is misleading A case-control study in Berlin, reported by Kohlmeier, Arminger, Bartolomeycik, Bellach, Rehm, and Thamm (1992) and by Hand and colleagues (1994), asked 239 lung cancer patients and 429 controls ( matched to the cases by age ...
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