Alagappa University 2007 B.Com BUSINESS STATISTICS - Question Paper

DISTANCE EDUCATION
B.Com. DEGREE EXAMINATION, DECEMBER 2007.
BUSINESS STATISTICS
(Upto 2004 onwards)
Time : 3 hours Maximum : 100 marks
PART A — (5 x eight = 40 marks)
ans any 5 ques..
All ques. carry equal marks.
1. Explain any 4 advantages of diagrammatic and graphic representation of data.
2. What do you mean by statistics? discuss its advantages.
3. Describe the different methods of measuring skewness.
4. Explain any 4 kinds of index numbers with their advantages.
5. Explain the various measures of dispersion.
6. Calculate the geometric mean of the subsequent :
2574, 475, 75, 5, 0.8, 0.08, 0.005, 0.0009.
7. Below provided is the annual income of individuals. compute quartile deviation and its co–efficient. Annual income (Rs.) 530, 700, 420, 650, 350, 290, 1250.
530, 700, 420, 650, 350, 290, 1250.
8. Calculate the co–efficient of concurrent deviation from the subsequent data :
Year 2001 2002 2003 2004 2005
Supply 350 375 410 300 360
Price 210 220 230 270 320
PART B — (4 x 15 = 60 marks)
ans any 4 ques..
All ques. carry equal marks.
9. From the subsequent data compute mode.
Income (Rs.) 0–10 10–20 20–30 30–40 40–50
Persons : 5 15 30 20 30
10. Calculate mean and standard deviation of the subsequent distribution:
X (Rs.) 10–19 20–29 30–39 40–49 50–59 60–69 70–79 80–89
f : 32 42 40 56 20 6 2 2
11. Calculate Karl Pearson’s coefficient of skewness for the data provided beneath :
X : 15 8 12 5 25 22 35
F : 4 5 12 20 13 20 6
12. Determine the correlation ranging from marks in Mathematics and Statistics by the method of ranks.
Maths 65 40 35 75 65 80 35 20 85 65 55 33
Statistics 30 55 68 28 76 25 80 85 20 35 45 65
13. Calculate Fisher’s Ideal Index number.
Commodity Price 2004 Quantity 2004 Price 2005 Quantity 2005
A 12 20 15 25
B 10 8 16 10
C 15 2 12 1
D 60 1 65 1
E 3 2 10 1
14. From the profit earned by a Public Ltd Company from 2000 to 2005. Fit a straight line pattern.
Year 2000 2001 2002 2003 2004 2005
Profit Rs. in ‘000 10 12 15 16 18 19
15. Explain in detail the different methods of collection of data.

Earning:   Approval pending.