ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade X - Measures of Central Tendency
Question 1
1.
The histogram given below represents the weights of students of a particular class. Using the data in the diagram, calculate the mean weight
  • 51.73 kg
  • 47.73 kg
  • 49.73 kg
  • 48.73 kg
  • 50.73 kg
Question 2
2.
The histogram given below shows the number of illiterate persons of different age groups in a town. Using the data in the diagram, calculate the mean age
  • 31.82 years
  • 34.82 years
  • 33.82 years
  • 30.82 years
  • 32.82 years
Question 3
3.
    • Weights of 305 students (in kg) are given below. Calculate the mean weight from the given histogram.
  • 67.68 kg
  • 72.68 kg
  • 75.68 kg
  • 69.68 kg
  • 77.68 kg
Question 4
4.
    • The marks obtained by 48 students of a class in an examination is given below. Calculate the mean mark correct to 2 decimal places.
    • Marks
      less than 25
      less than 30
      less than 35
      less than 40
      less than 45
      less than 50
      less than 55
      No. of students
      8
      15
      21
      29
      37
      43
      48
  • 39.56
  • 36.56
  • 31.56
  • 41.56
  • 33.56
Question 5
5.
    • Heights of 11 students (in cm) are given below. Find the mean height.
      • 136
      • 169
      • 172
      • 160
      • 168
      • 143
      • 127
      • 132
      • 153
      • 152
      • 141
  • 1675
    11
    cm
  • 1655
    11
    cm
  • 1654
    11
    cm
  • 1653
    11
    cm
  • 1664
    11
    cm
Question 6
6.
    • Temperatures of 10 days (in °C) are given below. Find the mean temperature.
      • 27
      • 33
      • 27
      • 32
      • 33
      • 28
      • 29
      • 35
      • 33
      • 32
  • 319
    10
    °C
  • 311
    10
    °C
  • 31
    °C
  • 309
    10
    °C
  • 329
    10
    °C
Question 7
7.
    • The following table shows the weights of
    • 65
    • persons in a group.
    • Find the
    • mean weight.
    • Weight (in kg)
      40 - 48
      49 - 57
      58 - 66
      67 - 75
      76 - 84
      No. of persons
      15
      6
      11
      19
      14
  • 826
    13
    kg
  • 4131
    65
    kg
  • 4259
    65
    kg
  • 4129
    65
    kg
  • 4194
    65
    kg
Question 8
8.
Find the mean of the first 10 even numbers.
  • 11
  • 9
  • 12
  • 10
  • 14
Question 9
9.
    • Given the mean of
    • 12
    • samples as
    • 4
      1
      2
    • ,
    • what is the new mean if two samples
    • 5
    • and
    • 5
    • are removed ?
  • 30
    7
  • 24
    5
  • 4
  • 22
    5
  • 14
    3
Question 10
10.
    • If the mean of the following frequency distribution is
    • 29
      7
      78
    • ,
    • find the value of 'x'.
    • Class-Interval
      Frequency
      10 - 17
      10
      18 - 25
      4
      26 - 33
      9
      34 - 41
      x
      42 - 49
      6
  • 13
  • 7
  • 11
  • 10
  • 9