ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade VIII - Statistics
Question 1
1.
    • Scores of 20 students are given below. Find the median.
    • Score
      71
      72
      76
      79
      80
      84
      85
      87
      88
      89
      No. of students
      2
      2
      1
      3
      1
      6
      1
      1
      2
      1
  • 85
  • 83
  • 84
  • 86
  • 82
Question 2
2.
    • The daily wages of
    • 152
    • workers in a factory are given below.
    • Find the
    • mean wage.
    • Wage (in rupees)
      20 - 27
      28 - 35
      36 - 43
      44 - 51
      52 - 59
      60 - 67
      68 - 75
      76 - 83
      No. of workers
      6
      22
      29
      29
      22
      12
      9
      23
  • ₹
    52.39
  • ₹
    51.42
  • ₹
    51.39
  • ₹
    53.39
  • ₹
    51.45
Question 3
3.
Find the mean of the first 15 even numbers.
  • 17
  • 18
  • 13
  • 16
  • 15
Question 4
4.
Which of the following class intervals are in inclusive form?
a)
40 - 47 , 48 - 55 , 56 - 63,...
b)
15.5 - 23.5 , 23.5 - 31.5 , 31.5 - 39.5...
c)
37 - 44 , 44 - 51 , 51 - 58...
d)
16 - 23 , 23 - 30 , 30 - 37,...
e)
16 - 23 , 24 - 31 , 32 - 39,...
  • {c,e}
  • {b,a}
  • {c,e,a}
  • {d,b,a}
  • {a,e}
Question 5
5.
    • If the mean of the following frequency distribution is
    • 55
      3
      14
    • ,
    • find the value of 'x'.
    • Class-Interval
      Frequency
      20 - 29
      1
      30 - 39
      9
      40 - 49
      x
      50 - 59
      9
      60 - 69
      10
      70 - 79
      9
  • 3
  • 4
  • 2
  • 7
  • 5
Question 6
6.
    • Given class interval
    • 14
    • -
    • 20
    • in exclusive form, its
    • class size is
  • 7
  • 9
  • 5
  • 3
  • 6
Question 7
7.
    • Scores of 12 students are given below. Find the median score.
      • 77
      • 89
      • 73
      • 73
      • 83
      • 72
      • 89
      • 80
      • 80
      • 71
      • 75
      • 73
  • 74
  • 75
  • 77
  • 76
  • 78
Question 8
8.
    • Rainfall of 11 days (in mm) are given below. Find the mean rainfall.
      • 5
      • 14
      • 11
      • 6
      • 7
      • 9
      • 10
      • 10
      • 8
      • 7
      • 7
  • 94
    11
    mm
  • 116
    11
    mm
  • 96
    11
    mm
  • 95
    11
    mm
  • 105
    11
    mm
Question 9
9.
    • The scores obtained by 11 students in a test are given below. Find the mode.
      • 18
      • 10
      • 1
      • 9
      • 8
      • 15
      • 8
      • 13
      • 8
      • 8
      • 20
  • 9
    1
    2
  • 8
  • 1
  • 19
  • 20
Question 10
10.
    • The scores obtained by 7 students in a test are given below. Find the mean score.
      • 15
      • 17
      • 9
      • 2
      • 7
      • 7
      • 16
  • 7
  • 17
  • 10
    3
    7
  • 2
  • 15