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BBA – 1ST Sem.

Times-2hours MM-50

BBA – 1ST Sem.

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Part – A (2 Marks)

  1. In a BBA class of 128 students, 48 have failed, securing 25 marks on an average. If the total marks of all the students the 5120 find the average marks second by the students passing the test.
  2. From the following locate the medium

    11 71 35 55 62 13 15 75

  1. Mean of 50 items was 80. It was discovered later that two items were wrongly taken as 23 and 24 place of 32 and 42 respectively. Find correct mean.
  2. From the following find the co-efficient of variation. X = 40, v = 25
  3. If the co-efficient of two series are 75% and 90% and their S.D.S. are 15 and 18 respectively, find their mean
  4. Determine person’s coefficient of correlation when x y = 150, x = 60, y = 50, x2 = 200 and N = 100
  5. Determine the number of pairs of observation when d2 = 231 and r (s) = - 0.4
  6. Find regression equation of x y = 20, x = 1.5, y = 2 and xy = 0.60
  7. If x y = - 26, x2 = 40, y2 = 20, x = 0 find b x y.
  8. Determine the value of range and its coefficient

    Marks 30 20 40 50 10 60 75 25
    No. of stds. 5 6 7 9 3 4 8 7

Part – B (Attempt any 6)

    1. From the following series, determine inter duartile range, Duartile deviation and their coefficient

    Roll no:

    Marks:

    		 1001

    94

    		 1002

    95

    		 1003

    96

    		 1004

    93

    		 1005

    87

    		 1006

    79

    		 1007

    73

    		 1008

    69


    1. Find the coefficient of correlation between two x and y wrong short cut

    X:

    Y:

    		 5

    1

    		 10

    6

    		 5

    2

    		 11

    8

    		 12

    5

    		 4

    1

    		 3

    4

    		 2

    6

    		 7

    5

    		 6

    2

    1. two regression equations:

    Sales:

    Purchase:

    		 91

    71

    		 97

    75

    		 108

    69

    		 121

    97

    		 67

    70

    		 124

    91

    		 51

    39

    		 73

    61

    		 111

    80

    		 57

    47


    1. Find the complained and coefficient of variation from the following data.

    Factors X Y
    N

    X

    		 100

    40

    10

    		 200

    50

    12

    1. Find standard deviation and coefficient of variation from the following data.

    Expenditure Below (Rs.)

    No. of students

    		 5

    6

    		 10

    16

    		 15

    28

    		 20

    38

    		 25

    42


    1. In a series these are 5 items out of which the values of the 3 items are 3, 5 and 7 respectively. If the mean and standard deviation of the series the 5 and 3 respectively find the values of other two items.
    2. Find medium

    Marks: bellow 10

    No. of students: 4

    		 10 – 30

    6

    		 30 – 60

    10

    		 60 – 100

    7

    		 100 and above

    3



    1. From the following data find the two entreme quartile

    Size of shoes:

    Frequency sales:

    		 8’

    7

    		 6.5”

    8

    		 7.5”

    10

    		 7”

    15

    		 5.5”

    40

    		 6”

    25

    		 4.5”

    28

    		 4”

    18

    		 5”

    10


    1. Following are the ranks given by 3 judges in a contest. Find the degree of correlation between 1st and 2nd, 2nd and 3rd, 3rd and 1st. And also mention which pair of judges agree or disagree the most:

      Judge 1: 1 3 7 9 2 4 10 8 6 5

      Judge 2: 7 5 4 6 1 2 3 8 10 9

      Judge 3: 4 10 3 9 2 8 1 5 7 6


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