
Introduction to Econometrics 3rd Edition by James Stock, Mark Watson
Edition 3ISBN: 978-9352863501
Introduction to Econometrics 3rd Edition by James Stock, Mark Watson
Edition 3ISBN: 978-9352863501 Exercise 16
Suppose that ( Y i, X i ) satisfy the assumptions in Key Concept 4.3 and, in addition, u i , is N( 0, u 2 ,) and is independent of X t.
a. Is
conditionally unbiased
b. Is
the best linear conditionally unbiased estimator of 1
c. How would your answers to (a) and (b) change if you assumed only that ( Y i X i ,) satisfied the assumptions in Key Concept 4.3 and var
is constant
d. How would your answers to (a) and (b) change if you assumed only that ( Y i X i ,) satisfied the assumptions in Key Concept 4.3
a. Is

b. Is

c. How would your answers to (a) and (b) change if you assumed only that ( Y i X i ,) satisfied the assumptions in Key Concept 4.3 and var

d. How would your answers to (a) and (b) change if you assumed only that ( Y i X i ,) satisfied the assumptions in Key Concept 4.3
Explanation
The least squares assumption
It is giv...
Introduction to Econometrics 3rd Edition by James Stock, Mark Watson
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