LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.A. DEGREE EXAMINATION – ECONOMICS
THIRD SEMESTER – November 2008
EC 3502 - QUANTITATIVE TOOLS FOR ECONOMICS
Date : 06-11-08
Time : 9:00 - 12:00
Dept. No.
Max. : 100 Marks
PART – A
Answer any FIVE questions in about 75 words each.
1.
2.
3.
4.
5.
6.
7.
TA 09
( 5 x 4 = 20 marks )
What are the functions of statistics ?
Where do we use Pie diagram?
Bring out the objectives of tabulation.
Define coefficient of Skewness.
What is the significance of Standard Error?
Distinguish between Correlation and Regression.
Give any four uses of Index numbers.
PART – B
Answer any FOUR questions in about 300 words each.
( 4 x 10 = 40 marks )
8. Represent the following data by a simple bar diagram
State
T.N
Production
of Paddy
38
in lakhs
quintals
ANDHRA
KARNATAKA PUNJAP
U.P
KERALA
65
52
10
10
16
9. Bring out the merits and demerits of different measures of Dispersion.
10. Calculate the Quartile deviation for the following data
Wages
in Rs./hr
No. of
wage
earners
Below
35
14
35 – 37
38 – 40
41 – 43
Over 43
60
95
24
7
11. Describe the various methods of collection of Primary Data.
12. Calculate range , standard deviation and coefficient of variation in respect of the ‘SMS’ s
given by 10 students per day.
50 55 57 49
54
61 64 59
58
56
13. Calculate the coefficient of Rank correlation for the following data
X
Y
53
47
98
25
95
32
81
37
75
30
61
40
59
39
55
45
14. How do you forecast the Indian GDP for the year 2010 ?
1
PART – C
Answer any TWO questions in about 900 words each.
( 2 x 20 = 40 marks )
15. Explain the importance of statistics in economic analysis and business decision making.
16. Calculate the Mean , Median and mode for the given data
Class
66 - 67
Frequency 15
67 - 68
24
68 – 69
40
69 – 70
20
70 – 71
14
71 - 72
11
17. Estimate the regression equations Yi = a + b Xi and Xi = c + d Yi
out the value of Y when X = 30 from the following data
Yi
Xi
43
25
46
28
49
35
41
32
36
31
32
36
31
29
30
38
33
34
and also find
39
32
18. Calculate fisher’s ideal index number and prove that it satisfy Time reversal and Factor reversal
test.
Commodity
Food
Rent
Cloth
fuel
( QUANTITY )
2000 -2001
2007 -2008
250
300
100
120
20
30
10
22
( PRICE )
2000 – 2001
2007 - 2008
150
130
120
200
600
1000
200
300
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