Calicut University 2008 B.Com Computer Science business statistics - Question Paper
c46005
C 46005 (Pages : 3) Name.....
Reg. No.....
FIRST YEAR B.Com. DEGREE EXAMINATION, APRIL/MAY 2008
Part IIICommerce Paper IBUSINESS STATISTICS (2005 admissions)
[New Scheme]
Maximum : SO Marks
Time : Three Hours
Answers may be written either in English or in Malayalam.
Part A
Answer any ten questions. Each question carries 1 mark.
S 1. Define Statistics.
f%. What is classification ?
3. What do you mean by class boundaries ?
4. What is source note ?
5. Give a short explanation of sample size.
6. What is Linear Correlation ? .
7. When is Weighted Arithmetic Mean used ?
8. Write a note on Second Order Averages.
9. Give any one difference between Standard deviation and Mean deviation.
10. Give the formula for coefficient of skewness.
11. What would be your interpretation if coefficient of correlation (r) = 0 ?
12. Explain Mutually Exclusive Events.
(10 x 1 = 10 marks)
Part B
Answer any ten questions. Each question carries 4 marks.
13. Write a note on use of Statistics in Commerce.
Statistics in the Science of counting. Explain.
Jl5. Distinguish between Primary data and Secondary data.
16. What are the different parts of a table ?
17. Distinguish between Correlation and Regression.
Turn over
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/l8. What are the advantages of Graphs and Diagrams ? v/l* Calculate Median from the following data :
Marks : 47 811 1215 1619 2023 2427 2831 3235 Frequency : 4 11 25 47 56 29 20 8
20. Calculate coefficient of correlation by concurrent deviation method :
X : 80 78 79 73 84 84 88 88 80
Y : 92 95 91 90 96 98 96 98 98
Use the most suitable formula to obtain Price Index No. taking 2004 as base :
Commodity 2004 2005
|
Price |
Quantity |
Price |
Quantity | |
|
A |
5 |
10 |
8 |
15 |
|
B |
... .8 |
15 |
10 ' |
10 |
|
C |
10 |
20 |
9 |
25 |
|
D |
15 |
10 |
16 |
12 |
22. Find Qj and Q;i for the following :
21 17 18 11 27 '22 19 14 24.
Find the missing terms if X of the following given series is 1.46 Number of accidents. Frequency
|
0 |
46 |
|
1 |
? |
|
2 |
? |
|
3 |
25 |
|
4 |
10 |
|
5 |
5 |
N = 200
24. Four cards are drawn without replacement. What is the probability that they are all Kings ?
(10 x 4 = 40 marks)
Ansu-er any two questions.
Each question carries 15 marks. .
25. The following table gives information regarding distribution of items and defective items among them according to size groups:
2526 2627 2728 2829 2930 3031 180 250 320 340 380 280 130 142 150 160 160 104
Size groups Total No. of items Defectives
Is there correlation between size and defectives ?
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26. There are 3 Economists, 4 Engineers, 2 Statisticians and 1 Doctor. A committee of 4 from among them is to be formed. Find the probability that the committee :
(a) Consist of one of each type.
(b) Has at least one Economist.
(c) Has the doctor as a member.
27. Compute Inter Quartile Range and Coefficient of Quartile Deviation for the following data :
X : 4 8 12 16 . 20 24 28 32 f : 4 9 17 40 53 37 24 16
(2 x 15 = 30 marks)
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Attachment: |
| Earning: Approval pending. |
