LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

   B.A. DEGREE EXAMINATION – ECONOMICS

TA 09

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 )

 

1. What are the functions of statistics ?
2. Where do we use Pie diagram?
3. Bring out the objectives of tabulation.
4. Define coefficient of Skewness.
5. What is the significance of Standard Error?
6. Distinguish between Correlation and Regression.
7. 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	ANDHRA	KARNATAKA	PUNJAP	U.P	KERALA
Production of Paddy in lakhs quintals	38	65	52	16	10	10

 

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	Below 35	35 – 37	38 – 40	41 – 43	Over 43
No. of wage earners	14	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	53	98	95	81	75	61	59	55
Y	47	25	32	37	30	40	39	45

 

14. 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 )

 

 

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	67 – 68	68 – 69	69 – 70	70 – 71	71 – 72
Frequency	15	24	40	20	14	11

 

 

17. Estimate the regression equations  Y_i   =   a  +  b X_i   and  X_i   =   c  +  d Y_i    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

 

 

18. 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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