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