In a multiple regression, the following sample regression equation is obtained 1

Question

In a multiple regression, the following sample regression equation is obtained 15212.9x1+2.7x2 Prdaty oqu 2t cos b. Interpret the slope coefficient of x1 O As x1 increases by one unit, y is predicted to decrease by 2.7 units, holding x2 constant As x1 increases by one unit, y is predicted to increase by 12.9 units, holding x2 constant As x1 increases by one unit, y is predicted to decrease by 12.9 units, holding x2 constant. O As x1 increases by one unit, y is predicted to increase by 2.7 units, holding x2 constant.

Explanation / Answer

a) Inputting the values of x1 and x2 in the given equation we get y=152+12.9*20+2.7*35=504.5

b) slope of 12.9 means that if x2 is held constant, increasing the x1 by 1 unit increases the y predicted by 12.9. Thus, option B is correct

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