Loyola College B.A. Economics Nov 2012 Quantitative Tools For Economics Question Paper PDF Download

LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

B.A. DEGREE EXAMINATION – ECONOMICS

THIRD SEMESTER – NOVEMBER 2012

EC 3502/EC 3500 – QUANTITATIVE TOOLS FOR ECONOMICS

 

 

 

Date : 05/11/2012             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 uses of statistics?
  2. Where do we use Pie diagram?
  3. Bring out the objectives of classification.
  4. Define ‘coefficient of Range’.
  5. What is the significance of Ordinary Least Square Technique?
  6. Distinguish between Correlation and Regression.
  7. What are the components of a Time series?

 

PART – B

 

Answer any FOUR questions in about 300 words each:                                           ( 4 x 10  = 40 marks )

 

  1. Represent the following data by a pie diagram

 

Items Food Education Rent Health Entertainment communication
Expenditure per month in thousand rupees 16 8 6 3 5 2

 

  1. What are the merits and demerits of different measures of Dispersion?

 

  1. Calculate the Harmonic mean of the daily  income of 10 families:

 

Family 1 2 3 4 5 6 7 8 9 10
Income in Rs. 85 70 10 75 500 8 42 250 40 36

 

  1. The arithmetic mean and standard deviation of a series of 20 items were calculated by a student as 20 cm and 3 cm respectively. But while calculating them an item 13 was misread as 30. Find the correct standard deviation.

 

  1. A random sample of 5 students from the second B.A. Economics has been selected and their marks scored in micro and macro economics are found to be

 

Student 1 2 3 4 5
Micro economics 85 60 40 90 73
Macro economics 93 75 50 80 65

 

Calculate the coefficient of Rank correlation and interpret.

 

  1. From the following data of the rainfall and production of Rice , find the most likely production corresponding to the rainfall of 40’’ .

 

Rainfall ( inches) Production in quintals
Mean 35 50
Standard deviation 5 8
Co efficient of correlation 0.80

 

  1. Assume that you have time series data of GDP from the year 1971 to 2010.

How do you forecast the Indian GDP for the year 2015?

 

PART – C

 

Answer any TWO questions in about 900 words each:                                            ( 2 x 20  = 40 marks )

 

  1. How does the statistical analysis help in understanding Economics?
  2. From the following data of weight of 122 persons determine the  Mean , Median and Modal weights.
Weights in lbs 100-110 110-120 120-130 130-140 140-150 150-160 160-170 170-180
Number of persons 4 6 20 32 33 17 8 2

 

 

 

 

  1. Estimate the consumption function Yi  =  a + b Xi   from the following data:

 

consumption in hundreds of rupees Yi 30 60 40 50 60 30 70 50 60
Income in hundreds of rupees Xi 50 60 50 60 80 50 80 40 70

 

  1. Estimate Fisher’s ideal index number and prove that it satisfy Time reversal and Factor

reversal test.

 

(  QUANTITY )                                     ( PRICE )

Commodity 2000 -2001 2011 -2012 2000 – 2001 2011 – 2012
A 8 6 2 4
B 10 5 5 6
C 14 10 4 5
D 19 13 2 2

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