D | Question 5 4.6 pts You have estimated a linear regression model relating Y t

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D | Question 5 4.6 pts You have estimated a linear regression model relating Y to X. Your professor says, "I think that the relationship between Y and X is nonlinear" How would you test the adequacy of your linear regression? Check all that apply) a There is evidence in favor of a non-linear relationship if there is zero correlation between the dependent and independent variable. O If adding a quadratic term, you could test the hypothesis that the estimated coefficient of the quadratic term is signifcantly different from zero D All of them. ression to the non-linear regression model.

Explanation / Answer

the options B and D is right.

- If adding a quadratic term, you could test the hypothesis that the estimated coefficient of the quadratic term is significantly different from zero.

- Compare the fit between of linear regression to the non-linear regression model,

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