CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade X - Statistics
Question 1
1.
    • The class boundaries of the class with frequency x is
    • Class-Interval
      Frequency
      46 - 52
      10
      53 - 59
      19
      60 - 66
      19
      67 - 73
      10
      74 - 80
      x
  • 73.5
    -
    80.5
  • 73.5
    -
    81
  • 73
    -
    80.5
  • 74
    -
    80
  • 73
    -
    81
Question 2
2.
    • Given class interval
    • 29
    • -
    • 39
    • in exclusive form, its
    • mid value is
  • 37
  • 35
  • 34
  • 33
  • 31
Question 3
3.
The following ogive shows the number of casualties of different age groups due to accidents in a city. Estimate the median.
  • 54.17 years
  • 59.17 years
  • 61.67 years
  • 64.17 years
  • 56.67 years
Question 4
4.
    • If the sum of the following frequency distribution is
    • 18
    • ,
    • find the value of 'x'.
    • Class-Interval
      Frequency
      20 - 29
      4
      30 - 39
      1
      40 - 49
      x
      50 - 59
      3
      60 - 69
      7
  • 5
  • 1
  • 3
  • 2
  • 4
Question 5
5.
    • The class mark of the class with frequency x is
    • Class-Interval
      Frequency
      4 - 14
      24
      15 - 25
      18
      26 - 36
      6
      37 - 47
      x
      48 - 58
      28
  • 39
  • 42
  • 44
  • 41
  • 43
Question 6
6.
    • The class mark of the class with frequency x is
    • Class-Interval
      Frequency
      16 - 21
      5
      21 - 26
      2
      26 - 31
      11
      31 - 36
      x
      36 - 41
      13
  • 34
  • 133
    4
  • 69
    2
  • 67
    2
  • 65
    2
Question 7
7.
    • The daily wage of 39 workers of a factory is given below. Calculate the mean wage correct to 2 decimal places.
    • Daily income (in Rs)
      less than 120
      less than 140
      less than 160
      less than 180
      less than 200
      No. of workers
      7
      12
      22
      32
      39
  • ₹165.56
  • ₹180.56
  • ₹126.56
  • ₹152.56
  • ₹140.56
Question 8
8.
    • Daily wages of 63 labourers (in ₹) are given below.
    • Identify the frequency distribution table for the given '
    • more than
    • ' ogive.
  • Daily wage (in Rs)
    265 - 271
    271 - 277
    277 - 283
    283 - 289
    289 - 295
    295 - 301
    No. of labourers
    13
    10
    17
    7
    11
    5
  • Daily wage (in Rs)
    265 - 271
    271 - 277
    277 - 283
    283 - 289
    289 - 295
    295 - 301
    No. of labourers
    13
    5
    10
    7
    11
    17
  • Daily wage (in Rs)
    265 - 271
    271 - 277
    277 - 283
    283 - 289
    289 - 295
    295 - 301
    No. of labourers
    13
    17
    10
    3
    11
    5
  • Daily wage (in Rs)
    265 - 271
    271 - 277
    277 - 283
    283 - 289
    289 - 295
    295 - 301
    No. of labourers
    13
    17
    5
    7
    11
    5
  • Daily wage (in Rs)
    265 - 271
    271 - 277
    277 - 283
    283 - 289
    289 - 295
    295 - 301
    No. of labourers
    13
    17
    10
    7
    11
    5
Question 9
9.
    • Weights of 109 students (in kg) are given below.
    • Identify the frequency distribution table for the given '
    • more than
    • ' ogive.
  • Weight (in kg)
    59 - 65
    65 - 71
    71 - 77
    77 - 83
    83 - 89
    89 - 95
    95 - 101
    No. of students
    20
    7
    19
    6
    20
    15
    17
  • Weight (in kg)
    59 - 65
    65 - 71
    71 - 77
    77 - 83
    83 - 89
    89 - 95
    95 - 101
    No. of students
    20
    19
    7
    11
    20
    15
    17
  • Weight (in kg)
    59 - 65
    65 - 71
    71 - 77
    77 - 83
    83 - 89
    89 - 95
    95 - 101
    No. of students
    20
    17
    19
    11
    20
    15
    7
  • Weight (in kg)
    59 - 65
    65 - 71
    71 - 77
    77 - 83
    83 - 89
    89 - 95
    95 - 101
    No. of students
    20
    7
    23
    11
    20
    15
    17
  • Weight (in kg)
    59 - 65
    65 - 71
    71 - 77
    77 - 83
    83 - 89
    89 - 95
    95 - 101
    No. of students
    20
    7
    19
    11
    20
    15
    17
Question 10
10.
The following ogive shows the distribution of the heights of a group of factory workers. Estimate the median.
  • 171.35 cm
  • 176.35 cm
  • 173.85 cm
  • 168.85 cm
  • 178.85 cm