LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

AK 37

M.A. DEGREE EXAMINATION – ECONOMICS

SECOND SEMESTER – APRIL 2008

    EC 2807 – ECONOMETRICS

 

 

 

Date : 29/04/2008            Dept. No.                                        Max. : 100 Marks

Time : 1:00 – 4:00

 

PART – A

 

 Answer any FIVE questions in about 75 words each.                  (5 x 4 = 20 marks)

1. Define econometrics.
2. What is a non linear transformation?
3. Distinguish between extreme and less extreme multicollinearity.
4. What is homoscedasticity/
5. What are the sources of dummy variable?
6. Differentiate between pure and mixed models.
7. What is an instrumental variable?

PART – B

 

 Answer any FOUR questions in about 250 words each.              (4 x 10 = 40 marks)

8. Derive the normal equations of a two variable linear model.
9. Explain the role dummy variable in seasonal adjustment.
10. Prove that inclusion of irrelevant variables posses a less serious problem than exclusion of relevant variables in the model.
11. Derive Koyck’s transformation used in estimating a distributed lag model.
12. Discuss the method of estimation using grouped data.
13. Derive GLS method of estimation.
14. Show that errors in the measurement of dependent variables poses a less serious problem than that in the independent variables.

PART – C

 

Answer any TWO questions in about 900 words each.     (2 x 20 = 40 marks)

15. Discuss the identifiably state of the following model

‘Y’ s are endogenous and ‘X’ s are exogenous and ‘U’s are error terms.

16. Define autocorrelation and discuss its consequences and remedial measures.
17. Derive 2SLS estimator.
18. Derive 3SLS estimator.

 

Go To Main Page

Latest Govt Job & Exam Updates:

View Full List ...