Data Analysis (Skill Enhancement Course ) Delhi University B.A. Prog. 5th Semester Previous Year Question Paper

 




                                                

                                       SET A 


Unique Paper Code  : 62273506 


Name of the Paper    : DATA ANALYSIS (SKILL ENHANCEMENT COURSE)


Name of the Course : B.A.Programme (CBCS)


Semester                      : Semester V


Duration                       : 3 hours 


 Maximum Marks       : 75 Marks 






Instructions for Candidates:


1. Write your roll number on the top immediately on receipt of this question paper . 

2. All questions carry equal marks(18.5 marks each)

3. Attempt any four questions. 

4. Note: Answers may be written either in English or Hindi; but the same should be used throughout the paper. 






1.(a) Discuss the merits and demerits or arithmetic mean and median .                                                                            5

    (b) Find the missing frequency for the given data if mean of the distribution is 36.                                                    7 


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Wages(in Rs.)| 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | 

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No.of workers| 3        | 10        | x         | 4          | 6         | 2         |

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(c) Calculate mean deviation and quartile from the following data :                                                                                  6.75

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Marks| 0-10 | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 |

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No.of 

Students | 4 |   6      |    10     |  20       | 10       |  6        |     4  |

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2.   (a) What do you understand by dispersion ? Explain briefly the various methods for measuring dispersion . 

       

       (b) The number of employees, wages per employee and the variance of the wage per employee for factories are given below :





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|_______________________________Factory A _______________Factory B ________________________|

|No.of Employees                                     50                                                100                                                               |

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|Avg. wages per                                        120                                               85                                                                | 

employee per 

month (Rs)

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| Vairance of the                                          9                                                        16                                                        |

 wages per employee

 per month 

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In which factory is there greater variation is the distribution of wages per employee?



(c) Calculate the value of mode from the following distribution                                                                                  5



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   Wages  I 20-25   | 25-30  | 30-35  | 35-40  | 40-45   | 45-50  | 50-55  | 55-60  |

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No.of

workers |   40        |     60       |  90      |     170  |   140    |   110    |   60       |   50     | 

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3.    (a) Explain the salient features of normal probability distribution .                                                                                    5

        (b) The coefficient of correlation between two variables X and Y is 0.64. Their covairence is 16. The varience is 9 . Find the standard deviation of Y series .                                                                                                                                                 5 





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  1. Can we get the answer key of question paper

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