Tamil Nadu Open University (TNOU) 2006 B.A Economics Elementary Statistics for Economists - exam paper
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10. What are the four components of time series? Estimate the trend line from the following data.
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11. Describe the method adopted in the measurement of National Income of India. What are the major difficulties encountered in such measurement?
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12. Explain the classification of data using examples. What are the advantages of classification of data?
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B.A. DEGREE EXAMINATION - JANUARY, 2006.
Economics
ELEMENTARY STATISTICS FOR ECONOMISTS Time : 3 hours Maximum marks : 75
SECTION A (3 x 5 = 15 marks)
Answer any THREE questions.
1. What do you understand by primary data? Explain anyone method of getting it.
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2, What are sampling errors? Mention its typeB. Can sampling errors be avoided completely.
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3. What is time reversal test? Find whether Laspeyre's index satisfies this test.
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4. Write a short note on cartograms.
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5. Define skewness. What are its types? Explain graphically.
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SECTION B (4 x 15 = 60 marks)
Answer any FOUR questions.
6. (a) Define Arithmetic Mean, Mention the important properties of Arithmetic Mean.
(b) Compute Arithmetic Mean from, the following data.
Marks: 0-10 10-20 20-30 300 40-50 50-60
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7. Describe the merits and demerits of various measures of dispersion.
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8. Describe stratified random sampling technique. What are its merits and demerits?
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9. Obtain the two lines of regression from the following data:
X: 4 5 6 8 11
Y: 12 10 8 7 5
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X: 4 5 6 8 11
Y: 12 10 8 7 5
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| Earning: Approval pending. |
