ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade VIII - Statistics
Question 1
1.
    • The class size used in the below table is
    • Class-Interval
      11 - 17
      18 - 24
      25 - 31
      32 - 38
      39 - 45
      46 - 52
      53 - 59
      Frequency
      21
      29
      1
      16
      26
      5
      21
  • 5
  • 8
  • 10
  • 6
  • 7
Question 2
2.
    • Convert the discontinuous form of the class interval 44 - 46 to continuous form
  • 43.5
    -
    47
  • 43
    -
    47
  • 43
    -
    46.5
  • 43.5
    -
    46.5
  • 44
    -
    46
Question 3
3.
    • Wages of 16 labourers are given below. Find the mode.
    • Wage (in rupees)
      395
      423
      433
      440
      473
      477
      492
      No. of labourers
      4
      3
      3
      2
      2
      1
      1
  • ₹
    395.00
  • ₹
    393.00
  • ₹
    394.00
  • ₹
    396.00
  • ₹
    397.00
Question 4
4.
    • Arrange the following data
      • 25
      • 23
      • 22
      • 13
      • 27
      • 40
      • 36
      • 13
      • 32
      • 24
    • in ascending order
    • 36
    • 23
    • 32
    • 35
    • 20
    • 31
    • 40
    • 25
    • 26
    • 36
    • 15
    • 10
    • 25
    • 13
    • 31
    • 34
    • 25
    • 40
    • 23
    • 14
    • 32
    • 28
    • 31
    • 32
    • 31
    • 26
    • 26
    • 40
    • 19
    • 30
    • 34
    • 17
    • 25
    • 15
    • 33
    • 28
    • 36
    • 30
    • 21
    • 37
    • 13
    • 13
    • 22
    • 23
    • 24
    • 25
    • 27
    • 32
    • 36
    • 40
Question 5
5.
    • If the upper and lower limit of class interval are 38 and 34 respectively, then the class interval is
  • 34
    -
    38
  • 33.5
    -
    38.5
  • 34
    -
    38.5
  • 33.5
    -
    38
  • 34.5
    -
    37.5
Question 6
6.
    • The daily wages (in rupees) of
    • 15
    • workers in a factory are given below.
    • Represent the data in the form of a frequency distribution
    • in exclusive form
    • taking class size
    • 20
    • .
      • 276
      • 268
      • 257
      • 200
      • 242
      • 256
      • 227
      • 281
      • 276
      • 285
      • 229
      • 280
      • 233
      • 246
      • 227
  • Wages (in rupees)
    200 - 220
    220 - 240
    240 - 260
    260 - 280
    280 - 300
    No. of Workers
    1
    9
    4
    3
    3
  • Wages (in rupees)
    200 - 220
    220 - 240
    240 - 260
    260 - 280
    280 - 300
    No. of Workers
    1
    4
    4
    3
    3
  • Wages (in rupees)
    200 - 220
    220 - 240
    240 - 260
    260 - 280
    280 - 300
    No. of Workers
    1
    3
    4
    3
    4
  • Wages (in rupees)
    200 - 220
    220 - 240
    240 - 260
    260 - 280
    280 - 300
    No. of Workers
    1
    4
    9
    3
    3
Question 7
7.
    • The daily wages of
    • 164
    • workers in a factory are given below.
    • Find the
    • mean wage.
    • Wage (in rupees)
      20 - 28
      28 - 36
      36 - 44
      44 - 52
      52 - 60
      60 - 68
      68 - 76
      76 - 84
      No. of workers
      25
      17
      25
      14
      27
      20
      19
      17
  • ₹
    50.88
  • ₹
    51.83
  • ₹
    50.83
  • ₹
    50.85
  • ₹
    52.83
Question 8
8.
    • A frequency distribution table is given below.
    • Find the
    • mean .
    • Class-Interval
      20 - 25
      26 - 31
      32 - 37
      38 - 43
      44 - 49
      50 - 55
      Frequency
      36
      8
      17
      33
      39
      18
  • 12043
    302
  • 11439
    302
  • 5720
    151
  • 11741
    302
  • 11441
    302
Question 9
9.
    • Given table in inclusive form, convert it into exclusive form.
    • Class-Interval
      16 - 21
      22 - 27
      28 - 33
      34 - 39
      40 - 45
      46 - 51
      Frequency
      29
      17
      14
      23
      13
      29
  • Class-Interval
    16.5 - 21.5
    22.5 - 27.5
    28.5 - 33.5
    34.5 - 39.5
    40.5 - 45.5
    46.5 - 51.5
    Frequency
    29
    17
    14
    23
    13
    29
  • Class-Interval
    16 - 21
    21 - 26
    26 - 31
    31 - 36
    36 - 41
    41 - 46
    Frequency
    38
    49
    23
    29
    43
    25
  • Class-Interval
    15.5 - 20.5
    21.5 - 26.5
    27.5 - 32.5
    33.5 - 38.5
    39.5 - 44.5
    45.5 - 50.5
    Frequency
    29
    17
    14
    23
    13
    29
  • Class-Interval
    15.5 - 21.5
    21.5 - 27.5
    27.5 - 33.5
    33.5 - 39.5
    39.5 - 45.5
    45.5 - 51.5
    Frequency
    29
    17
    14
    23
    13
    29
  • Class-Interval
    15.5 - 21
    21.5 - 27
    27.5 - 33
    33.5 - 39
    39.5 - 45
    45.5 - 51
    Frequency
    29
    17
    14
    23
    13
    29
Question 10
10.
    • Rainfall of 15 days (in mm) are given below. Find the median rainfall.
      • 5
      • 12
      • 10
      • 9
      • 8
      • 9
      • 13
      • 5
      • 14
      • 11
      • 12
      • 11
      • 7
      • 13
      • 12
  • 11
    mm
  • 9
    mm
  • 13
    mm
  • 10
    mm
  • 12
    mm