LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.A. DEGREE EXAMINATION – ECONOMICS
THIRD SEMESTER – APRIL 2008
EC 3502 - QUANTITATIVE TOOLS FOR ECONOMICS
Date : 07/05/2008
Time : 1:00 - 4:00
Dept. No.
BC 11
Max. : 100 Marks
PART – A
Answer any FIVE questions in about 75 words each:
1.
2.
3.
4.
5.
6.
7.
(5 x 4 = 20 marks)
Define Statistics.
Distinguish between a schedule and a Questionnaire.
What are the different types of classification?
State and explain two important properties of Arithmetic Mean.
What is Bowley’s coefficient of skewness.
What are the uses of Regression Analysis?
What are the methods of construction of Index Numbers?
PART – B
Answer any FOUR questions in about 250 words each:
(4 x 10 = 40 marks)
8. Discuss the various stages of Statistical Investigation.
9. Calculate Median for the following data.
Marks
<5 <10 <15 <20 <25 <30 <35 <40 <45
No. of
Students 29 224 465 582 634 644 650 653 655
10. Calculate Mean Deviation form the Mean for the following data.
Size
Frequency
2 4 6 8 10 12 14 16
2 2 4 5 3 2 1 1
11. From the following data calculate coefficient of variation and state which share value is more
stable.
X
Y
35 54 52 53 56 58 52 50 51 49
108 107 105 105 106 107 104 103 104 101
12. Briefly explain the Mathematical Properties of Standard Deviation.
13. Explain the various components of Time series.
14. Discuss the problems in the construction of Index Numbers.
PART – C
Answer any TWO questions in about 900 words each:
(2 x 20 = 40 marks)
15. Explain the methods of collecting data..
16. Find the coefficient of the correlation for the following data
Cost
Sales
39
47
65
53
62
58
90
86
82
62
75
68
25
60
98
91
36
51
78
84
17. Compute Laspeyres, Paasche, Fishers and Marshall-Edgeworth. Index Numbers from the following
data.
18. Fit a straight line trend for the following series. Estimate the value for 2008.
Year
Production
of Steel
2001
2002
2003
2004
2005
2006
2007
60
72
75
65
80
85
95
***************
1