Download OU B.Com 2017 Dec 3rd Sem 3510 Business Statistics Question Paper

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Code No. 3510/ E

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FACULTY OF COMMERCE

B.Com. (CBCS) lll - Semester Examination, December 2017

(Common Paper for General/Computers/Computer Applications/Advertising/Foreign Trade and Tax Procedure Courses)

Business Statistics - |

Paper Code-BC-306

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Time : 3 hours Max. Marks : 80

Part— A (5 X 4 = 20 Marks)

Note : Answer any Five of the following questions.

1. Define the term ‘Statistics’ in plural sense.
2. Limitations of statistics

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3. Functions of Diagrams.
4. The mean of the following series is Rs.115.86. Find the missing figure.
   House Rent (Rs.): 110 112 113 117 ? 125 128 130
   No. of Houses: 25 17 13 5 4 8 8 6
5. Calculate the Harmonic mean from the following data.
   

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   x 10 12 14 16 18 20
   f 8 10 6 14 12 10
6. Find out the value of quartile from the following data.
   x: 3 4 5 6 7 8
   f: 30 42 60 18 45 24 75

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7. In a certain distribution the following results were obtained.
   Mean = 45 Median = 48, Karl Pearson co-efficient of skewness = -0.4, Calculate the value of standard deviation.
8. Types of correlation

Part - B (5 X 12 = 60 Marks)

Note: Answer the following questions not exceeding FOUR pages each.

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9. a) Define statistics and explain its scope and importance.
   OR
   b) Define sampling. Discuss various sampling techniques.
10. a) The following table shows the results of B.Com. students of a university for the last three years. Represent the same by a multiple bar diagram.
    Exam Results of B.Com students
    

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    Year	Division I	Division II	Division III	Failed
    2014	50	150	250	150
    2015	60	200	300	140
    2016	50	250	350	150

    
    OR
    b) The following table shows the marks obtained by students in a class
    

    Marks:	10-20	20-30	30-40	40-50	50-60	60-70	70-80
    No. of Students:	3	10	14	24	17	14	3

11. a) Calculate median from the following data.
    

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    Marks	above 20	above 30	above 40	above 50	above 60	above 70	above 80	above 90
    No. of Students	200	195	177	150	142	124	84	16

    
    OR
    b) Calculate mode from the following data
    

    Marks :	0-10	10-20	20-30	30-40	40-50	50-60	60-70
    Frequency:	5	15	20	32	14	14	5

12. a) From the following data calculate mean deviation from the median.
    

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    C.I	6-10	11-15	16-20	21-25	26-30	31-35	36-40	41-45	46-50	51-55	56-60
    Frequency :	8	10	16	7	3	2	1	2	3	6	2

    
    OR
    b) A firm which was carrying on business from 1st January 2015 gets itself incorporated as a company on 1st May 2015. the first accounts are drawn up
    

    C.I	0-10	10-20	20-30	30-40	40-50	50-60	60-70	70-80	80-90	90-100
    Frequency:	3	5	7	10	12	15	17	12	6	2

13. a) Calculate Karl Pearson's co-efficient of correlation from the following data :
    

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    X	1	2	3	4	5	6	7	8	9	10
    Y	3	7	2	8	6	9	1	11	4	15

    
    OR
    b) From the following data calculate rank correlation.
    

    x:	20	25	60	45	80	25	55	65	25	75
    y:	60	62	68	65	70	72	78	80	63	66

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