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Roll No. ____________________ Total No. of Pages : 02
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Total No. of Questions : 07
BBA (Sem.-3)
BUSINESS STATISTICS
Subject Code : BB-304
M.Code : 10516
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Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains SIX questions carrying TEN marks each and students have to attempt any FOUR questions.
SECTION-A
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Write briefly :
- What are the merits of mean?
- What are properties of Geometric mean?
- What are the uses of Harmonic mean?
- What are the applications of coefficient of variation?
- What is Karl Pearson's coefficient of Correlation?
- What is Regression analysis?
- What are the limitations of moving averages method?
- What is the classical approach of Probability?
- What is Normal Distribution?
- What is Bayes' Theorem?
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SECTION-B
- What is meant by tabulation of Data? Discuss in detail rules of tabulation.
- The following data relate to age of employees and the number of days they were reported sick in a month.
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Employees
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| Age(X) | 30 | 32 | 35 | 40 | 48 | 50 | 52 | 55 | 57 | 61 |
| Sick Days(Y) | 1 | 0 | 2 | 5 | 2 | 4 | 6 | 5 | 7 | 8 |
Calculate Karl Pearson's Coefficient of Correlation and interpret it.
- Find two regression equations for the following two series. What is most likely value of X when Y=20 and most likely value of Y when X = 22?
| X: | 35 | 25 | 29 | 31 | 27 | 24 | 33 | 36 |
| Y: | 23 | 27 | 26 | 21 | 24 | 20 | 29 | 30 |
- What is Time series analysis? Discuss in detail components of Time series analysis.
- What is Binomial Distribution? Discuss in detail properties of Binomial Distribution.
- What is Poisson distribution? Discuss the role of Poisson distribution.
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