2014
(November)
ECONOMICS
(General)
Course: 501
(Elementary Statistics for Economics)
Full Marks: 80
Pass Marks: 32
Time: 3 hours
The figures in the margin indicate full marks for the questions
1. Choose the correct answer of the following: 1x8=8
 Which of the following is a measure of central tendency?
 Mean deviation.
 Geometric mean.
 Standard deviation.
 Range.
 How many methods are used for collecting primary data?
 1
 2
 3
 4
 SemiInterquartile range and quartile deviation are same concepts
 Yes.
 No.
 Secondary data are collected from which of the following sources?
 Direct personal investigation.
 Official reports.
 Mail questionnaire.
 None of the above.
 Maximum frequency of a series is associated with
 Median.
 Mode.
 Arithmetic mean.
 Geometric mean.
 Coefficient of variation =
 Index number
 Measures of cost of living.
 Measures of national income.
 Measures rate of employment.
 None of the above.
 Which one of the following is Laspeyres’ formula of index number?
2. Write short notes on any four of the following (within 150 words each): 4x4=16
 Secondary data.
 Mode.
 Mean deviation.
 Census vs. Sample.
 Importance of tabulation in Statistics.
3. (a) Discuss the importance of Statistics in Economics and mention its limitations. 8+3=11
Or
(b) What is mean by tabulation? State the essential elements of a good table. Explain its importance in Statistics.
4. (a) Define ‘arithmetic mean’ and ‘geometric mean’. Mention the merits and demerits of arithmetic mean and geometric mean. 3+8=11
Or
(b) Calculate the mode from the following data:
Class Interval:

010

1020

2030

3040

4050

5060

6070

Frequency:

4

5

3

2

6

7

3

5. (a) Define standard deviation. Why is it most commonly used as a measure of dispersion? 4+7=11
Or
(b) Calculate the quartile deviation from the following data:
Wages:

2030

3040

4050

5060

6070

No of Workers:

8

10

9

6

2

6. (a) What is an index number? What are its methods of construction? Write in brief about its uses. 1+8+2=11
Or
(b) Calculate the price index number for the year 2011 by using (i) Paasche’s formula and (ii) Fisher’s ideal index formula from the following data:
Price

Quantity
 
2010

2011

2010

2011
 
A
B
C
D

10
22
20
15

20
44
40
30

100
220
200
150

50
110
100
75

7. (a) What are the basic methods of interpolation? Discuss the various methods of interpolation and point out their differences. 4+8=12
Or
(b) Given below is the population of Darrang District in different years. Estimate the population with the help of Newton’s interpolation formula for the year 1947: 12
Years:

1941

1951

1961

1971

Population (in lakhs):

28.0

29.4

30.5

35.5

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