LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

BC 11

B.A. DEGREE EXAMINATION – ECONOMICS

THIRD SEMESTER – APRIL 2008

EC 3502 – QUANTITATIVE TOOLS FOR ECONOMICS

 

 

 

Date : 07/05/2008                Dept. No.                                       Max. : 100 Marks

Time : 1:00 – 4:00

PART – A

                                                                       

Answer any FIVE questions in about 75 words each:                      (5 x 4 = 20 marks)

 

1. Define Statistics.
2. Distinguish between a schedule and a Questionnaire.
3. What are the different types of classification?
4. State and explain two important properties of Arithmetic Mean.
5. What is Bowley’s coefficient of skewness.
6. What are the uses of Regression Analysis?
7. 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)       

 

1. Discuss the various stages of Statistical Investigation.

 

1. 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

 

1. Calculate Mean Deviation form the Mean for the following data.

Size	2	4	6	8	10	12	14	16
Frequency	2	2	4	5	3	2	1	1

 

1. From the following data calculate coefficient of variation and state which share value is more stable.

X	35	54	52	53	56	58	52	50	51	49
Y	108	107	105	105	106	107	104	103	104	101

 

1. Briefly explain the Mathematical Properties of Standard Deviation.
2. Explain the various components of Time series.
3. 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)

 

1. Explain the methods of collecting data..

 

1. Find the coefficient of the correlation for the following data

Cost	39	65	62	90	82	75	25	98	36	78
Sales	47	53	58	86	62	68	60	91	51	84

 

1. Compute Laspeyres, Paasche, Fishers and Marshall-Edgeworth. Index Numbers from the following data.

 

1. Fit a straight line trend for the following series. Estimate the value for 2008.

Year	2001	2002	2003	2004	2005	2006	2007
Production of Steel	60	72	75	65	80	85	95

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