CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade IX - Statistics
Question 1
1.
Identify the class interval table for the given histogram.
  • Class-Interval
    63 - 68
    69 - 74
    75 - 80
    81 - 86
    87 - 92
    93 - 98
    99 - 104
    105 - 110
    Frequency
    40
    119
    112
    16
    80
    67
    18
    37
  • Class-Interval
    63 - 68
    69 - 74
    75 - 80
    81 - 86
    87 - 92
    93 - 98
    99 - 104
    105 - 110
    Frequency
    40
    119
    117
    16
    80
    67
    18
    37
  • Class-Interval
    63 - 68
    69 - 74
    75 - 80
    81 - 86
    87 - 92
    93 - 98
    99 - 104
    105 - 110
    Frequency
    40
    119
    16
    117
    80
    67
    18
    37
  • Class-Interval
    63 - 68
    69 - 74
    75 - 80
    81 - 86
    87 - 92
    93 - 98
    99 - 104
    105 - 110
    Frequency
    40
    119
    117
    16
    76
    67
    18
    37
  • Class-Interval
    63 - 68
    69 - 74
    75 - 80
    81 - 86
    87 - 92
    93 - 98
    99 - 104
    105 - 110
    Frequency
    40
    37
    117
    16
    80
    67
    18
    119
Question 2
2.
Which of the following tables represent the given histogram with varying base widths
  • Height (in cm)
    51 - 61
    61 - 71
    71 - 91
    91 - 111
    No. of plants
    10
    5
    13
    15
  • Height (in cm)
    51 - 61
    61 - 71
    71 - 91
    91 - 111
    No. of plants
    10
    5
    8
    8
  • Height (in cm)
    51 - 61
    61 - 71
    71 - 91
    91 - 111
    No. of plants
    10
    3
    15
    15
  • Height (in cm)
    51 - 61
    61 - 71
    71 - 91
    91 - 111
    No. of plants
    10
    5
    13
    8
  • Height (in cm)
    51 - 61
    61 - 71
    71 - 91
    91 - 111
    No. of plants
    10
    5
    15
    15
Question 3
3.
    • Weights of 26 students are given below. Find the mode.
    • Weight (in kg)
      40
      43
      47
      48
      54
      56
      57
      60
      No. of students
      3
      5
      3
      1
      4
      4
      4
      2
  • 43
    kg
  • 42
    kg
  • 44
    kg
  • 45
    kg
  • 41
    kg
Question 4
4.
    • Given the sample data, prepare the class interval table in
    • inclusive
    • form with
    • 4
    • as min value and a class size of
    • 6
    • .
      • 18
      • 16
      • 4
      • 26
      • 36
      • 25
      • 29
      • 18
      • 40
      • 19
      • 49
      • 10
      • 22
      • 21
      • 37
      • 5
      • 6
      • 50
      • 13
  • Class-Interval
    4 - 9
    10 - 15
    16 - 21
    22 - 27
    28 - 33
    34 - 39
    40 - 45
    46 - 51
    Frequency
    3
    2
    5
    3
    1
    2
    1
    2
  • Class-Interval
    4 - 9
    10 - 15
    16 - 21
    22 - 27
    28 - 33
    34 - 39
    40 - 45
    46 - 51
    Frequency
    3
    2
    10
    3
    1
    2
    1
    2
  • Class-Interval
    4 - 10
    10 - 16
    16 - 22
    22 - 28
    28 - 34
    34 - 40
    40 - 46
    46 - 52
    Frequency
    3
    2
    5
    3
    1
    2
    1
    2
  • Class-Interval
    4 - 9
    10 - 15
    16 - 21
    22 - 27
    28 - 33
    34 - 39
    40 - 45
    46 - 51
    Frequency
    3
    2
    3
    5
    1
    2
    1
    2
Question 5
5.
    • Identify the frequency distribution table for the given ages of 11 students in years
      • 16
      • 12
      • 14
      • 24
      • 10
      • 16
      • 19
      • 17
      • 17
      • 10
      • 20
  • Age (in years)
    10
    12
    14
    16
    17
    19
    20
    24
    No. of Students
    2
    1
    1
    2
    2
    1
    1
    1
  • Age (in years)
    10
    12
    14
    16
    17
    19
    20
    24
    No. of Students
    2
    1
    2
    1
    2
    1
    1
    1
  • Age (in years)
    10
    12
    16
    18
    19
    21
    23
    No. of Students
    1
    1
    2
    2
    1
    2
    2
  • Age (in years)
    15
    16
    17
    18
    20
    24
    25
    No. of Students
    2
    2
    2
    1
    2
    1
    1
  • Age (in years)
    10
    12
    14
    16
    17
    19
    20
    24
    No. of Students
    2
    1
    1
    1
    2
    2
    1
    1
Question 6
6.
Which of the following tables represent the given histogram with varying base widths
  • Weight (in kg)
    42 - 72
    72 - 82
    82 - 92
    92 - 122
    122 - 132
    132 - 152
    No. of students
    5
    8
    12
    2
    8
    6
  • Weight (in kg)
    42 - 72
    72 - 82
    82 - 92
    92 - 122
    122 - 132
    132 - 152
    No. of students
    15
    8
    17
    13
    8
    11
  • Weight (in kg)
    42 - 72
    72 - 82
    82 - 92
    92 - 122
    122 - 132
    132 - 152
    No. of students
    15
    8
    12
    18
    8
    11
  • Weight (in kg)
    42 - 72
    72 - 82
    82 - 92
    92 - 122
    122 - 132
    132 - 152
    No. of students
    5
    8
    12
    4
    8
    6
  • Weight (in kg)
    42 - 72
    72 - 82
    82 - 92
    92 - 122
    122 - 132
    132 - 152
    No. of students
    15
    8
    12
    13
    8
    11
Question 7
7.
    • If the upper and lower limit of class interval are 52 and 44 respectively, then the class interval is
  • 44.5
    -
    51.5
  • 44
    -
    52
  • 44
    -
    52.5
  • 43.5
    -
    52
  • 43.5
    -
    52.5
Question 8
8.
    • Given class interval
    • 24
    • -
    • 30
    • in exclusive form, its
    • class size is
  • 7
  • 3
  • 5
  • 6
  • 9
Question 9
9.
    • The daily wages (in rupees) of
    • 17
    • workers in a factory are given below.
    • Represent the data in the form of a frequency distribution
    • in inclusive form
    • taking class size
    • 30
    • .
      • 246
      • 299
      • 251
      • 235
      • 209
      • 300
      • 238
      • 286
      • 233
      • 283
      • 260
      • 228
      • 211
      • 242
      • 236
      • 234
      • 239
  • Wages (in rupees)
    209 - 238
    239 - 268
    269 - 298
    299 - 328
    No. of Workers
    8
    2
    5
    2
  • Wages (in rupees)
    209 - 238
    239 - 268
    269 - 298
    299 - 328
    No. of Workers
    2
    5
    2
    8
  • Wages (in rupees)
    209 - 238
    239 - 268
    269 - 298
    299 - 328
    No. of Workers
    8
    5
    6
    2
  • Wages (in rupees)
    209 - 238
    239 - 268
    269 - 298
    299 - 328
    No. of Workers
    8
    5
    2
    2
  • Wages (in rupees)
    209 - 238
    239 - 268
    269 - 298
    299 - 328
    No. of Workers
    8
    10
    2
    2
Question 10
10.
    • Heights of 12 plants (in cm) are given below. Find the median height.
      • 93
      • 52
      • 63
      • 77
      • 76
      • 50
      • 80
      • 78
      • 90
      • 88
      • 60
      • 79
  • 155
    2
    cm
  • 159
    2
    cm
  • 78
    cm
  • 157
    2
    cm