University of Allahabad 2009 B.Com , (Part-II) , Business Statistics - Question Paper

B.Com. (Part-II) (New Course)
Examination, 2009
Business Statistics
Paper: Ninth

Time Allowed: 3 Hours] [Maximum Marks: 100

Note: This paper is divided into part- 'A' and Part-'B'. ans all ques. from Part- 'A' and 3 ques. from Part-'B'. Use of calculator is prohibited.

Part-'A'
Note: Attempt all 8 ques.. ans in not more than 100 words. every ques. carries five marks


1. Distinguish ranging from a 'Schedule' and 'Questionnaire'.
2. What is meant by 'Universe and 'Sample'?
3. discuss the term 'Dispersion'.
4. state the properties of Normal Distribution.
5. what is T-test?
6. A bag contains five white, four black, three yellow and four red balls. What is the percentage probability of getting a black or red ball at random in a single drawn of 1 ball?
7. What do you understand by Central Tendency?
8. discuss the significance of Interpolation in commerce and Industry.

Part-'B'
Note: Attempt any 3 ques. in maximum 600 words. every ques. carries 20 marks

9. compute Karl Pearson's measure of coefficient of skewness from the subsequent date:

Values Frequency
5-10 6
10-15 8
15-20 17
20-25 21
25-30 15
30-35 11
35-40 2

10. From the subsequent info compute coefficient of correlation ranging from age and literacy:

Age group Total Population Literate Population
(in years) (00) (00)
10-20 1,200 1,100
20-30 1,000 925
30-40 800 740
40-50 500 470
50-60 150 140
70-80 50 45

11. Determine the percentage number for criminals ubder35 years:

Age Percentage of Criminals
0-25 52.0
25-30 15.3
30-40 16.8
40-45 10.3

12. 1000 plots of agricultural blocks has a standard deviation of 2.7 lbs. a different 500 plots, taken from the identical block has a standard deviation of 2.6 lbs. Is the difference ranging from the 2 standard deviation statistically significant?
13. Distinguish among secular trend, seasonal variation and cyclical fluctuations. How would you measure secular pattern in any provided data?

Earning:   Approval pending.