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Sarah Gets a Diamond
Pfeifer, Phillip E.; Mills, GregCase DARDEN-QA-0702-EDecision AnalysisGreg Mills describes his search for the perfect engagement ring which includes an analysis of the prices of 6,000 diamonds. An engineer, Greg hopes to impress Sarah Staggers by using regression to find an underpriced diamond. Students are asked to either select one of the 6,000 diamonds or provide point forecasts for prices of 3,142 diamonds in a hold-out sample. The instructor can use the actual prices of the held-out diamonds to evaluate stude...Starting at €8.20
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Screening for Chronic Kidney Disease
Pfeifer, Phillip E.; Bang, HeejungCase DARDEN-QA-0704-EDecision AnalysisThe case asks students to develop a method for identifying individuals at risk of having chronic kidney disease. A 6,000-subject training set containing 34 potential predictor variables is provided along with a 2,819 subject validation set the instructor uses to evaluate student predictions. The case is based on an actual study which resulted in a simple nine-question survey that health professionals use to help patients decide whether to be test...Starting at €8.20
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Darden's Luckiest Student 2008
Pfeifer, Phillip E.; Bodily, Samuel E.Case DARDEN-QA-0717-EDecision AnalysisThe case describes a three-factor, full-factorial experiment run in conjunction with the Darden's Luckiest Student event of 2008. Prior to identifying Darden's Luckiest, all 300 first-year students made binding decisions between varying amounts of cash and the opportunity to select one of two identical briefcases. One briefcase contained $18,750; the other contained $0. Students are asked to analyze the results of the experiment and draw conclusi...Starting at €8.20
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Salmones Puyuhuapi (A)
Pfeifer, Phillip E.; Echeverria, RafaelCase DARDEN-QA-0749-EDecision AnalysisThis case series is appropriate for undergraduate, MBA, executive education, and MBAExec audiences but is specifically designed for decision analysis, a first-year MBA core course. In the A case, Osvaldo Correa, CEO of Salmones Puyuhuapi (SP), must decide how to respond to news that the ISA virus has infected a competitor’s salmon farming site. The alternatives include harvesting SP’s 900,000 salmon two months early, waiting for the fish to grow ...Starting at €8.20
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Salmones Puyuhuapi Part I
Bodily, Samuel E.; Echeverria, Rafael; Pfeifer, Phillip E.Case DARDEN-QA-0776-EDecision AnalysisThis case series is appropriate for undergraduate, MBA, executive education, and MBA Exec audiences but is specifically designed for decision analysis, a first-year MBA core course. In the Part I case, Osvaldo Correa, CEO of Salmones Puyuhuapi (SP), must decide how to respond to news that the ISA virus has infected a competitor’s salmon farming site. The alternatives include harvesting SP’s 900,000 salmon two months early, waiting for the fish to...Starting at €8.20
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City Salary Freeze
Pfeifer, Phillip E.Case DARDEN-QA-0794-EDecision AnalysisMayor Anthony Lee has asked his assistant to begin the analysis of a recent survey of city residents to help him decide between freezing the salaries of city employees and cutting back on city services. There is a supplemental spreadsheet available for students (UVA-QA-0794X).Starting at €8.20
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Thomas Jefferson Had Girls (B)
Pfeifer, Phillip E.Case DARDEN-QA-0797-EDecision AnalysisThe A and B cases are intended for undergraduate, MBA, executive education, and MBAExec audiences. They were used as an exam case for “Data Analysis and Optimization,” which is both a first- and second-year MBA elective. They were also used as the first class of an undergraduate business statistics class. The A case begins by explaining that Thomas Jefferson fathered five girls (and one stillborn son) and Randolph Jefferson (Thomas’s brother) fat...Starting at €5.74
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Saving Customers at Vigil Home Security
Pfeifer, Phillip E.Case DARDEN-QA-0804-EDecision AnalysisMike Thomas, director of customer relationships at the second-leading provider of residential security systems in the United States, set out to examine data from 61,235 customer "saves" in order to determine if the offer used to persuade a customer not to discontinue service affected the subsequent longevity of the saved relationship. If some offers led to longer subsequent relationships, Thomas's next step would be to reward customer service rep...Starting at €8.20
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The Judgment of Princeton
Pfeifer, Phillip E.Case DARDEN-QA-0813-EDecision AnalysisThe case descirbes a wine-tasting competition held in Princeton, New Jersey, in 2012. The competition pitted the best wines from New Jersey (NJ) against the best wines from France in blind taste tests. The case stops after the scores of nine judges tasting 20 wines have been recorded. Students are asked to take these 180 scores and determine the best red and best white and to also compare the performance of the 12 NJ wines to the 8 French wines.Starting at €8.20
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Night-Lights and Nearsightedness (A)
Pfeifer, Phillip E.; Zadnik, KarlaCase DARDEN-QA-0842-EDecision AnalysisResearchers at the University of Pennsylvania were interested in whether exposure to light early in life might affect eye growth and lead to an increased risk of myopia (nearsightedness). Eyes grew rapidly after birth, but myopia usually did not develop until later in life and arose from excessive postnatal eye growth. They knew that the duration of daily light had been shown to increase eye growth in chicks and wondered whether the same might b...Starting at €8.20