**Sargodha University MA Economics Paper-VIII Econometrics Theory and Application Past Papers 2016**

Here you can download Past Papers of Paper-VIII Econometrics Theory and Application, MA Economics Part Two, 1st & 2nd Annual Examination, 2016 University of Sargodha.

**Econometrics Theory and Application UOS Past Papers 2016**

**M.A. Economics Part – II**

**Paper-VIII(Econometrics)**

**1 ^{st} Annual Exams.2016**

**Time: 3 Hours Marks:100**

**Note: Objective part is compulsory. Attempt any four questions from subjective parts**

__Objective Part__

**Q.1:Write short answers of the following on your answer sheet in two lines only. (2*10)**

- Define Econometrics
- Why error term is a part of regression model?
- What are major methods of economic forecasting
- What are the desirable properties of good econometric model
- What is the unique feature of ILS (Indirect least Square) method? vi. What is the use of “Chow Test”?
- Differentiate between time series & Cross section data.
- How can we detect Multicollinearity?
- What is BLUE property?
- What is Dummy Variable Trap?

__Subjective Part__

**Q.2:** The following data is collected to determine a suitable regression equation relating the length of an infant Y (cm) to age X_{1} (days) and weight at birth X_{2} (Kg):

Y | 57.5 | 52.8 | 61.3 | 67 | 53.5 | 62.7 | 56.2 | 68.5 | 69.2 |

X_{1} |
78 | 69 | 77 | 88 | 67 | 80 | 74 | 94 | 102 |

X_{2} |
2.75 | 2.15 | 4.41 | 5.52 | 3.21 | 4.32 | 2.31 | 4.30 | 3.71 |

Estimate the equation i.e. Y on X1 and X2 Test individual significance of parameter using a = .05.

**Q.3:** Apply Gold-Feld & Quandt test to check the evidence of Heteroskedasticity in the following data at 5% level of significance. (Y denotes income & X denotes consumption)

Y |
20 |
25 |
23 |
18 |
26 |
27 |
29 |
31 |
22 |
27 |
32 |
35 |
40 |
41 |
39 |

X |
18 |
17 |
16 |
10 |
8 |
15 |
16 |
20 |
18 |
17 |
19 |
18 |
26 |
25 |
23 |

**Q.4:** (a) What is Autocorrelation? Discuss its major causes.

b. Write a comprehensive note on detection of autocorrelation?

**Q.5:** By considering the following model, Find reduced form equation. Also determine structural parameters in the form of reduced form coefficient.

Y_{1} = *a*_{1} + *a*_{2}Y_{2} + *a*_{3}X_{1} + U_{1}

Y_{2} = *b*_{1} + *b*_{2}Y_{1} + *b*_{3}X_{2} + U_{1}

**Q.6:** By considering the repression model:

Find mean and variance for un-conditional forecasts when Y_{t+1} = *a* + *β*X_{t+1} + et+_{1}

*a*is estimated, β is known*a*is known and β is unknown

**Q.7:**Answer the following questions:

- Methodology of econometric research.
- Identified and unidentified equations.

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