# Dibrugarh University Arts Question Papers:ECONOMICS (Elementary Statistics for Economics)' November-2014

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
1. Which of the following is a measure of central tendency?
1. Mean deviation.
2. Geometric mean.
3. Standard deviation.
4. Range.
1. How many methods are used for collecting primary data?
1. 1
2. 2
3. 3
4. 4
1. Semi-Interquartile range and quartile deviation are same concepts
1. Yes.
2. No.
1. Secondary data are collected from which of the following sources?
1. Direct personal investigation.
2. Official reports.
3. Mail questionnaire.
4. None of the above.
1. Maximum frequency of a series is associated with
1. Median.
2. Mode.
3. Arithmetic mean.
4. Geometric mean.
1. Coefficient of variation =
1. Index number
1. Measures of cost of living.
2. Measures of national income.
3. Measures rate of employment.
4. None of the above.
1. 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
1. Secondary data.
2. Mode.
3. Mean deviation.
4. Census vs. Sample.
5. 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: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 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: 20-30 30-40 40-50 50-60 60-70 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 29.4 30.5 35.5

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