Annamalai University 2008-1st Year M.A Economics " 530 OF STATISTICS " ( - III ) ( ) 5415 - Question Paper

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13. What is an index number ? Discuss the requisities of a good index number.

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Name of the Candidate :

5 4 15 M.A. DEGREE EXAMINATION, 2008

(ECONOMICS)

(FIRST YEAR)

(PAPER - III)

530. ECONOMICS OF STATISTICS

December ]    [ Time : 3 Hours

Maximum : 100 Marks

SECTION - A (5 x 8 = 40)

Answer any FIVE questions.

All questions carry equal marks.

1.    Describe the advantages of diagrammatic representation of data.

2.    Why is arithmetic mean considered to be the best average ?

3.    Write a short note on skewness.

4.    Distinguish between variance and coefficient of variation.

5.    Explain the method of least squares for the estimation of regression lines.

6.    State and prove the addition theorem of probability.

7.    Discuss the uses of standard error.

8.    Enumerate the limitations of Indian Statistics.

SECTION - B (3 x 20 = 60)

Answer any THREE questions.

All questions carry equal marks.

9.    The following data relate to the age of a group of government employees. Calculate the arithmetic mean and standard deviation.

Age	No. of employees
50-55	25
45-50	30
40-45	40
35-40	45
30 - 35	80
25 - 30	50
20 - 25	20

10. Calculate Karl Pearsons correlation coefficient for the following data:

Price of commodity (in Rs)	Demand (in '000 units)
10	40
12	41
15	48
14	60
19	50

11. Fit a straight line trend by the method of least squares and estimate the trend values :

Year	Profit (in lakh Rs )
1991	28-0
1992	29-4
1993	30-2
1994	27-0
1995	32-5

12. Give a detailed account of different methods of sampling.

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Attachment: annamalai-university-2008-m-a-economics-18275-1.pdf

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