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Roll No. __________________ Total No. of Pages : 02
Total No. of Questions : 09
BBA/BBA/RD/SIM) (2018 Batch) (Sem.-2)
BUSINESS STATISTICS
Subject Code: BBA-201-18
M.Code : 75916
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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 consists of FOUR Sub-sections: Units-I, II, III & IV.
- Each Sub-section contains TWO questions each, carrying TEN marks each.
- Student has to attempt any ONE question from each Sub-section.
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SECTION-A
- Write briefly :
- Primary Data
- Inferential Statistics
- Geometric Mean
- Standard Deviation
- Probability Sampling
- Harmonic Mean
- Bayes' Theorem
- Poisson Distribution
- Correlation
- Regression
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SECTION-B
UNIT-I
- What is statistics? Discuss its functions and scope.
- Classify and explain various sampling techniques.
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UNIT-II
- In a moderately asymmetric distribution, the mode and mean are 32.1 and 35.4 respectively. Find the value of Median.
- The following table shows the monthly expenditure of 80 students of a university on breakfast:
| Expenditure (Rs.) | No. of students | Expenditure (Rs.) | No. of Students |
|---|---|---|---|
| 780-820 | 2 | 530-570 | 13 |
| 730-770 | 6 | 480-520 | 9 |
| 680-720 | 7 | 430-470 | 7 |
| 630-670 | 12 | 380-420 | 4 |
| 580-620 | 18 | 330-370 | 2 |
Calculate mean, standard deviation, and coefficient of variation of above data.
UNIT-III
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- Two ladies were asked to rank 7 different types of lipsticks. The ranks given by them are as follow:
| Lipsticks | A | B | C | D | E | F | G |
|---|---|---|---|---|---|---|---|
| Neetu | 2 | 3 | 1 | 4 | 5 | 7 | 6 |
| Shalini | 1 | 3 | 4 | 2 | 5 | 6 | 7 |
Calculate Spearman's rank correlation coefficient.
- In a correlation study the following values are obtained:
| X | Y | |
|---|---|---|
| Mean | 65 | 67 |
| Standard Deviation | 2.5 | 3.5 |
| Coefficient of Correlation | 0.8 |
Find the two regression equations that are associated with the above values.
UNIT-IV
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- What is probability? Explain laws of probability.
- What is Binomial distribution? Compare Normal and Poisson distribution.
NOTE : Disclosure of Identity by writing Mobile No. or Marking of passing request on any paper of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU BBA 2020 March Previous Question Papers
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