Annamalai University 2007 B.B.A QUANTITATIVE METHODS - exam paper

PART - A (10 × two = 20)
ans any TEN ques..
All ques. carry equal marks.
1. State any 2 uses of statistics in business.
2. What do you mean by sampling ?
3. describe 'median'
4. provide the formula for ?Semi - interquartile
range?.
5. What is correlation ?
6. Write a note on ?Time series?.
7. Write down any 2 characteristics of index
number.
8. State the Addition theorem on probability.
9. What is normal distribution ?
10. describe finite set.
11. If
obtain A + B.
12. If
A = [1, 2, 4, 6, 8] ;
B = [2, 3, 4, 5, 6],
obtain A Ç B.
[ two three ]
A = ?1 four [5 ?2 ]
and B = one ?3 ,
PART - B (4 × 10 = 40)
ans any 4 ques..
All ques. carry equal marks.
13. elaborate the disadvantages of graphical
presentation ?
14. What is Venn diagram ? - Illustrate.
15. compute mean deviation about the mean for
the subsequent data :
16. From the data provided below, compute
Spearman?s rank correlation co-efficient :
17. compute Fisher?s Ideal Index Number :
x : five 15 25 35 45 55 65
f : eight 12 10 eight three two seven .
Marks in Maths : 85 60 73 40 90
Marks in Accountancy : 93 75 65 50 80
Price
(Rs.)
Quantity
(Units)
A two 74 three 82
B five 125 four 140
C seven 40 six 33
2004 - 05 2005 - 06
Price
(Rs.)
Quantity
(Units)
18. obtain the inverse of
PART - C (2 × 20 = 40)
ans any 2 ques..
All ques. carry equal marks.
19. obtain mean, median and mode for the
subsequent :
[2 two ]
A = three 5
0 - nine 5
10 - 19 14
20 - 29 28
30 - 39 24
40 - 49 18
50 - 59 7
60 - 69 3
70 - 79 1
20. Fit a straight line pattern by the method of
lowest squares and estimate the pattern
components. What is the estimated value in
2008 ?
21. The probabilities of three students A, B, and C
solving a issue in statistics are
and . A issue is provided to all the 3
students, what is the probability that,
(i) No 1 will solve the issue ?
(ii) Only 1 will solve the issue ?
(iii) Atleast 1 will solve the issue ?
22. Solve the subsequent system of simultaneous
formula by Cramer?s rule :
2x + 3y + 3z = 22
x ? y + z = 4
4x + 2y ? z = 9

Earning:   Approval pending.