When are lagged predictor variables most commonly used? a. In a ...

[Wadzanai]

When are lagged predictor variables most commonly used?
 a. In a simple linear regression model.
 
  b. In a time series regression model.
 
  c. In a analysis of variance.
 
  d. In an exponential model.

Question 2

Qualitative (or categorical) variables can be incorporated into regression models by converting it to a ________.
 a. dummy variable
 
  b. randomized block model
 
  c. model with interaction
 
  d. block

[Meganchabluk]

Answer to Question 1

b

Answer to Question 2

a