ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade X - Measures of Central Tendency
Question 1
1.
    • Heights of 217 plants (in cm) are given below. Calculate the mean height from the given histogram.
  • 96.79 cm
  • 88.79 cm
  • 93.79 cm
  • 98.79 cm
  • 90.79 cm
Question 2
2.
    • Rainfall of 15 days (in mm) are given below. Find the mean rainfall.
      • 12
      • 11
      • 9
      • 7
      • 11
      • 6
      • 6
      • 8
      • 9
      • 11
      • 13
      • 12
      • 14
      • 5
      • 15
  • 179
    15
    mm
  • 164
    15
    mm
  • 149
    15
    mm
  • 151
    15
    mm
  • 10
    mm
Question 3
3.
    • The heights of 45 pupils in a school are given below. Calculate the mean height correct to 2 decimal places.
    • Height (in cm)
      less than 134
      less than 144
      less than 154
      less than 164
      less than 174
      less than 184
      No. of pupils
      6
      17
      26
      30
      37
      45
  • 156.22 cm
  • 153.22 cm
  • 137.22 cm
  • 138.22 cm
  • 169.22 cm
Question 4
4.
    • The following table shows the weights of
    • 62
    • persons in a group.
    • Find the
    • mean weight.
    • Weight (in kg)
      50 - 60
      61 - 71
      72 - 82
      83 - 93
      94 - 104
      No. of persons
      9
      10
      16
      20
      7
  • 2482
    31
    kg
  • 2421
    31
    kg
  • 2451
    31
    kg
  • 2422
    31
    kg
  • 2420
    31
    kg
Question 5
5.
    • The arithmetic mean of
      • 30
      • 11
      • 13
      • 9
      • 36
      • 20
      • 39
      • 44
    • is
  • 25.25
  • 24.25
  • 23.25
  • 27.25
  • 26.25
Question 6
6.
    • Heights of 13 plants (in cm) are given below. Find the mean height.
      • 57
      • 76
      • 80
      • 51
      • 69
      • 60
      • 83
      • 58
      • 76
      • 59
      • 58
      • 63
      • 68
  • 64
    cm
  • 65
    cm
  • 67
    cm
  • 68
    cm
  • 66
    cm
Question 7
7.
Find the mean of the first 15 even numbers.
  • 15
  • 17
  • 16
  • 14
  • 19
Question 8
8.
    • If the mean of
    • 4
    • samples is
    • 37
      3
      4
    • ,
    • what is the new mean if
    • 10
    • is subtracted from each number.
  • 57
    2
  • 55
    2
  • 111
    4
  • 113
    4
  • 109
    4
Question 9
9.
    • Heights of 121 students (in cm) are given below. Calculate the mean height from the given histogram.
  • 144.38 cm
  • 151.38 cm
  • 169.38 cm
  • 122.38 cm
  • 126.38 cm
Question 10
10.
Find the mean of first 6 multiples of 2.
  • 4
  • 7
  • 6
  • 10
  • 8