Author Question: What type of regression selects independent variables for inclusion in the regression model one at a ... (Read 83 times)

joblessjake · **on:** Jun 24, 2018

What type of regression selects independent variables for inclusion in the regression model one at a time?
a. time series regression

b. backward-selection stepwise regression

c. logarithm transformed regression

d. forward-selection stepwise regression

Question 2

If a residual plot looks like a parabola, what should you try adding to the model?
a. Try replacing y by its logarithm.

b. Nothing, the residual plot should look like a parabola.

c. Try adding x2 to the model.

d. Try replacing x with its square root.