Acharya Nagarjuna University (ANU) 2006 B.A Political Science Economics Statistics - Question Paper

B.A. DEGREE EXAMINATION, DECEMBER 2006
(Examination at the end of Final Year)
Part II - Economics
Paper III - ECONOMICS STATISTICS

Time : 3 hours Maximum : 100 marks

part A - (2 X 20 = 40 marks)
ans any 2 of the subsequent.

1. elaborate the different sources of statistical data? How do you collect data?

2. What is correlation? obtain the rank correlation coefficient for the subsequent data:

X : 68 64 75 50 64 80 75
Y : 62 58 68 45 81 60 68

3. elaborate the different measures of dispersion? obtain the coefficient of skewness from the subsequent data:

Class interval : 0 - 10 10 - 20 20 - 30 30 - 40
Frequency : 1 3 4 2

4. What is index number? compute the Fisher.s index member for the subsequent data:

Commodity Base year Current year

Price volume Price volume

A 6 50 10 56
B 2 100 2 120
C 4 60 6 60
D 10 30 12 24

PART B - (3 X 15 = 45 marks)
ans any 3 of the subsequent.

5. elaborate the requisites for an ideal measure of central tendency? In your opinion, which avg. is the best avg. of all the averages.

6. A factory producing 2 types of bulbs A and B. According to life of the bulbs the subsequent info is provided. Using coefficient of variation obtain which type of bulb is having more variation in life hours.

Life hours Bulb A Bulb B

500 - 700 5 4
700 - 900 11 30
900 - 1100 26 12
1100 - 1300 10 8
1300 - 1500 8 6
Total 60 60

7. Obtaining the linear regression formula Y on X from the subsequent data:

X : 18 20 21 22 27 27 28 29 29 29
Y : 23 27 29 28 28 31 35 30 33 36

8. Fit a straight line pattern formula to the subsequent data and hence estimate the production for the year 2007:

Year : 2001 2002 2003 2004 2005

Production
(in tons): 80 90 92 83 94

9. discuss Histogram, Frequency Polygon and Frequency curve. Draw the above diagrams for the subsequent data:

Class intervals : 10 - 20 20 - 30 30 - 40 40 - 50 50 - 60 60 - 70 70 - 80
Frequency : 10 24 40 32 20 14 4

10. elaborate issues under construction of index numbers? discuss them clearly.

PART C - (3 X five = 15 marks)
ans any 3 ques..

11. Lorenz curve.
12. Empirical relationship ranging from mean, median and mode.
13. Ogives
14. Cost of residing index.
15. Kurtosis.
16. Agriculture Statistics.

Earning:   Approval pending.