Introduction to Econometrics 3rd Edition by James Stock, Mark Watson

تمرين 1

A is a continuous variable that takes on values between 5 and 100. Z is a binary variable. Sketch the following regression functions (with values of X between 5 and 100 on the horizontal axis and values of Y on the vertical axis):
a.

b.

c.
i.

ii. same as (i), but with Z=0.
d.
i.

ii. same as (i), but with Z=0.
e.