An estimated multiple regression model has the form ŷ = 8 + 3x1 - 5x2 -4x3. As x1 increases by 1 unit, with x2 and x3 held constant, the value of y, on average, is estimated to:
A)decrease by 3 unit.
B)increase by 3 units.
C)decrease by 6 units.
D)increase by 11 units.

Question

Quizplus · Accepted Answer

According to the given regression model, the coefficient of x1 is 3. This means that as x1 increases by 1 unit, with x2 and x3 held constant, the value of y is estimated to increase by 3 units on average.

An Estimated Multiple Regression Model Has the Form ŷ =