What type of regression selects independent variables for ...

[joblessjake]

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.

[kishoreddi]

Answer to Question 1

d

Answer to Question 2

c

[joblessjake]

Excellent

[chereeb]

Gracias!