Tamil Nadu Open University (TNOU) 2009-2nd Year M.A Tamilnadu open university Economics Statistical Methods - Question Paper

M.A. DEGREE exam
JUNE 2009.
Second Year
(AY 2005–06 batch onwards)
Economics
STATISTICAL METHODS
Time : three hours Maximum marks : 75
PART A — (3 x five = 15 marks)

ans any 3 ques..
1. Bring out the importance of statistical analysis in
Economics.

2. describe Spearman’s rank correlation coefficient
Interpret its values.

3. discuss proportion method to obtain out the nature of
association ranging from 2 attributes.

4. elaborate weighted index numbers? provide two
examples.

5. elaborate independent events? discuss with an
example.

PART B — (4 x 15 = 60 marks)
ans any 4 ques..

6. calculate mean, median and mode from the subsequent
data :
Class : 20–30 30–40 40–50 50–60 60–70
Frequency : 12 21 35 30 2

7. What is Skewness? elaborate its types? discuss any
two important measures of skewness.

8. (a) elaborate the properties of regression lines?
(b) provided the subsequent data write down the two
regression equations.
Variable Variable
x y
Mean 40 48
S.D. 11 17
r = 0.4

9. provided the subsequent data, interpolate the value of y
when x = 25.
x : 10 20 30 40 50
y : 100 120 130 140 150

10. Estimate the pattern line from the subsequent data
Year : 2000 2001 2002 2003 2004 2005 2006
Production : 70 75 90 98 84 91 98

11. define important methods of sampling.

12. To test effectiveness of inoculation against cholera
the subsequent table was found.
No. of persons
Attacked Not attacked
Inoculated 30 160
Not inoculated 140 460
Does inoculation prevent from cholera?

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Earning:   Approval pending.