A multiple regression model has the form = 7 + 2 x₁ + 9 x₂ As x₁ increases by 1 unit (holding x₂ constant), is expected to A)increase by 9 units B)decrease by 9 units C)increase by 2 units D)decrease by 2 units

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Quizplus · Accepted Answer

According to the regression model, as x₁ increases by 1 unit (holding x₂ constant), 11eaaba9_11e9_0d7b_b90e_cd0168ad7488_TB2074_11 is expected to increase by 2 units. The coefficient of x₁ is 2, which means that for every one unit increase in x₁, the predicted value of 11eaaba9_11e9_0d7b_b90e_cd0168ad7488_TB2074_11 increases by 2 units. The coefficient of x₂ is 9, which means that for every one unit increase in x₂, the predicted value of 11eaaba9_11e9_0d7b_b90e_cd0168ad7488_TB2074_11 increases by 9 units, but this is holding x₁ constant.

A Multiple Regression Model Has the Form = 7