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QUESTION
CASE 4.3 in Keller (2009, pp: 151) presents a problem on Cadillac's Lagging Sales.
CASE 4.3 in Keller (2009, pp: 151) presents a problem on Cadillac's Lagging Sales. The data(C04-03 ) contains information on ages of the owners of the ve luxury cars (columns 1 to 5),their household incomes (columns 6-10), their years of education (columns 11-15). The luxurycars are BMW, Cadillac, Lexus,Lincoln and Mercedes.
