ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade VIII - Statistics
Question 1
1.
    • Heights of 21 students are given below. Find the mode.
    • Height (in cm)
      131
      132
      139
      140
      145
      164
      169
      172
      No. of students
      2
      1
      6
      3
      3
      2
      3
      1
  • 140
    cm
  • 137
    cm
  • 138
    cm
  • 141
    cm
  • 139
    cm
Question 2
2.
    • A frequency distribution table is given below.
    • Find the
    • mean .
    • Class-Interval
      4 - 13
      14 - 23
      24 - 33
      34 - 43
      44 - 53
      54 - 63
      Frequency
      7
      13
      7
      47
      2
      1
  • 5083
    154
  • 4929
    154
  • 2465
    77
  • 5237
    154
  • 4931
    154
Question 3
3.
    • Ages of 25 students are given below. Find the median.
    • Age (in years)
      10
      11
      12
      13
      14
      15
      No. of students
      7
      1
      6
      4
      4
      3
  • 14
    years
  • 12
    years
  • 13
    years
  • 11
    years
  • 10
    years
Question 4
4.
Find the median of all the factors of 20.
  • 7
    2
  • 17
    4
  • 11
    2
  • 5
  • 9
    2
Question 5
5.
    • The class size used in the below table is
    • Class-Interval
      16 - 22
      22 - 28
      28 - 34
      34 - 40
      40 - 46
      46 - 52
      52 - 58
      58 - 64
      Frequency
      25
      30
      10
      24
      12
      26
      19
      28
  • 6
  • 5
  • 4
  • 7
  • 8
Question 6
6.
Given the bar graph, find the minimum frequency
  • 35
  • 40
  • 25
  • 20
  • 30
Question 7
7.
    • Convert the continuous form of the class interval 33.5 - 38.5 to discontinuous form
  • 34.5
    -
    37.5
  • 34
    -
    38
  • 33.5
    -
    38
  • 34
    -
    38.5
  • 33.5
    -
    38.5
Question 8
8.
Which of the following are discontinuous variables?
a)
Weights of persons in a group.
b)
Number of workers in a factory.
c)
Number of members in a family.
d)
Wages of workers in a factory.
e)
Heights of children in a class.
  • {a,b}
  • {e,a,b}
  • {d,c}
  • {d,c,b}
  • {b,c}
Question 9
9.
    • Heights of 25 students are given below. Find the median.
    • Height (in cm)
      125
      145
      147
      151
      158
      166
      171
      173
      No. of students
      2
      2
      3
      3
      4
      5
      2
      4
  • 160
    cm
  • 156
    cm
  • 159
    cm
  • 158
    cm
  • 157
    cm
Question 10
10.
The marks obtained by Venkat in his annual exam are shown below. Find the subject that has 54 score.
  • Spanish
  • Sanskrit
  • Biology
  • Hindi
  • Physics