Question: 3. In a regression analysis, the response variable y is assumed to be related to the regressor r and a categorical variable with two types

3. In a regression analysis, the response variable y is assumed to be related to the regressor r and a categorical variable with two types A and B. The data set is given below. Type A Type B ID y ID y 1 2.5 1.1 1 4.8 1.4 2 3.0 2.3 5.1 2.2 3 3.4 4.5 3 4.9 4.1 4 4.2 5.4 4 6.2 5.1 5 5.8 6.8 6.8 6.5 6 7.0 7.3 6 7.9 8.0 6.2 8.5 7 8.9 8.8

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