(c)Write out the model in equation form, being careful to handle the qualitative variables properly. >a.Price: The coefficient indicates a negative relationship between Price and Sales which means when Price goes up, the Sales will decrease.ī.Urban: The coefficient indicates a negative relationship between Urban and Sales which means when it’s Urban, then Sales will decrease.Ĭ.US: The coefficient indicates a positive relationship between US and Sales which means when it is US, then the Sales will decrease. Be careful-some of the variables in the model are qualitative. (b)Provide an interpretation of each coefficient in the mode. (a)Fit a multiple regression model to predict Sales using Price, Urban, and US. 10.This question should be answered using the Carseats data set.
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