Author Question: Which of the following statements about building regression models is false? a. You need to verify ... (Read 32 times)

dakota nelson · **on:** Jun 24, 2018

Which of the following statements about building regression models is false?
a. You need to verify that the required conditions are satisfied.

b. You only need to construct one model.

c. You should be selective in choosing independent variables.

d. It is important to gather enough observations or else the model may incorrectly indicate a good fit.

Question 2

Which of the following statements about stepwise regression is true?
a. The coefficient of each variable in the model remains the same as new variables are added.

b. After computing the simple regression model for each independent variable, all variables whose F-statistics are higher than the F-to-enter are immediately added to the model.

c. If two independent variables are highly correlated, only one of them will enter the equation.

d. Once a variable is chosen for the model, it will never be removed.