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Mathematics, 12.03.2021 21:00 shaviaa

A regional express delivery service company recently conducted a study to investigate the relationship between the cost of shipping a package (Y), the package weight (X1), and the distance shipped (X2). Several packages were randomly selected from among the large number received for shipment, and a detailed analysis of the shipping cost was conducted for each package. These sample observations are given in the file P10_22.xlsx. Why would the manager want to add such a term to the regression equation?

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