LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034 M.A. DEGREE EXAMINATION – ECONOMICS
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THIRD SEMESTER – NOV 2006
EC 3875 – APPLIED ECONOMETRICS
Date & Time : 06-11-2006/9.00-12.00 Dept. No. Max. : 100 Marks
Part – A
Answer any FIVE questions in about 75 words each. (5 x 4 = 20 marks)
- What is meant by coefficient of determination?
- What is the confident interval for ‘β’ in a regression model?
- Suppose the hypothesis to be tested are
β2 + β3 = 0
β4 = 1
β5 = 0
Express that in the form Ho: Rβ = γ
- Define BLUE.
- What are the different kinds of time series analysis?
- What are the reasons to include error term in the model?
- What do you mean by panel data? Give an example.
Part – B
Answer any FOUR questions in about 300 words each. (4 x 10 = 40 marks)
- Complete the following ANOVA based on a regression model
Source df SS MSS F
Regression – 800 – –
Error 45 – – –
Total 49 1200 .
Also obtain (i) Sample size (ii) Adjusted R – square
- Explain the method used for testing a linear restriction.
- Explain the method of converting the Coub-Douglas function as a linear model. How will you test the linear hypothesis in that model.
- Explain Hansens test for stability.
- Discuss the practical problems posed by the distributed lag model in the direct application of OLS.
- Analyze the lagged case in time series regression model.
- Verify that the sampling variance depends not only on the disturbance variance but also on the sampling values of the explanatory variables.
Part – C
Answer any TWO questions in about 900 words each. (2 x 20 = 40 marks)
- Given Y = family food spending, X1 = income, X2 = family size
Family | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
Y | 40 | 50 | 50 | 70 | 80 | 100 | 110 | 140 | 160 | 200 |
X1 | 100 | 150 | 100 | 300 | 200 | 400 | 300 | 300 | 850 | 300 |
X2 | 1 | 1 | 2 | 1 | 4 | 2 | 4 | 6 | 1 | 8 |
- Explain tests of structural change in detail.
- Examine the various cases of panel data models.
- Obtain the variance-covariance matrix for correlated error term over time and bring out its consequences.
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