Assume that you had estimated the following quadratic regression model = 607.3 + 3.85 Income - 0.0423 Income2.If income increased from 10 to 11 ($10,000 to $11,000),then the predicted effect on testscores would be
A)3.85
B)3.85-0.0423
C)Cannot be calculated because the function is non-linear
D)2.96

Question

Assume that you had estimated the following quadratic regression model  = 607.3 + 3.85 Income - 0.0423 Income2.If income increased from 10 to 11 ($10,000 to $11,000),then the predicted effect on testscores would be
A)3.85 
B)3.85-0.0423 
C)Cannot be calculated because the function is non-linear 
D)2.96

Quizplus · Accepted Answer

The Answer of Assume that you had estimated the following quadratic regression model  = 607.3 + 3.85 Income - 0.0423 Income2.If income increased from 10 to 11 ($10,000 to $11,000),then the predicted effect on testscores would be
A)3.85 
B)3.85-0.0423 
C)Cannot be calculated because the function is non-linear 
D)2.96

Assume That You Had Estimated the Following Quadratic Regression Model