Which estimated multiple regression allows a test for nonlinearity?
A) $\hat { y } = 47 - 12 x _ { 1 } + 8 x _ { 1 } x _ { 2 } - 5 x _ { 2 }$ .
B) $\hat { y } = 47 - 12 x _ { 1 } + 8 x _ { 1 } ^ { 2 } - 5 x _ { 2 } + 25 x _ { 2 } ^ { 2 }$
C) $\hat { y } = 47 - 12 x _ { 1 } + 5 x _ { 2 } + 13 x _ { 3 }$

Question

Quizplus · Accepted Answer

The term $x_1^2$ in the model indicates a quadratic relationship and allows for testing for nonlinearity. Choices A and C do not have any quadratic or interaction terms.

Which Estimated Multiple Regression Allows a Test for Nonlinearity? A) y^=47−12x1+8x1x2−5x2\hat { y } = 47 - 12 x _ { 1 } + 8 x _ { 1 } x _ { 2 } - 5 x _ { 2 }y^​=47−12x1​+8x1​x2​−5x2​

Which Estimated Multiple Regression Allows a Test for Nonlinearity?
A) $\hat { y } = 47 - 12 x _ { 1 } + 8 x _ { 1 } x _ { 2 } - 5 x _ { 2 }$