ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade X - Measures of Central Tendency
Question 1
1.
    • If the mean of
    • 6
    • samples is
    • 31
    • ,
    • what is the new mean if
    • 9
    • is added to each number.
  • 41
  • 38
  • 39
  • 40
  • 43
Question 2
2.
    • Heights of 30 students are given below. Find the mean.
    • Height (in cm)
      135
      138
      139
      146
      151
      166
      169
      No. of students
      4
      3
      8
      3
      2
      4
      6
  • 2243
    15
    cm
  • 748
    5
    cm
  • 2242
    15
    cm
  • 2272
    15
    cm
  • 2257
    15
    cm
Question 3
3.
The histogram given below represents the weights of students of a particular class. Using the data in the diagram, calculate the mean weight
  • 50.55 kg
  • 53.55 kg
  • 49.55 kg
  • 51.55 kg
  • 52.55 kg
Question 4
4.
    • Heights of 128 students (in cm) are given below. Calculate the mean height from the given histogram.
  • 112.59 cm
  • 161.59 cm
  • 136.59 cm
  • 139.59 cm
  • 123.59 cm
Question 5
5.
    • The mean of
    • 6
    • numbers is
    • 12
      1
      6
    • .
    • Upon
    • adding
    • one number,
    • the mean becomes
    • 12
      4
      7
    • .
    • Find the
    • included
    • number.
  • 12
  • 16
  • 15
  • 14
  • 18
Question 6
6.
    • Scores of 231 students are given below. Calculate the mean score from the given histogram.
  • 95.29
  • 134.29
  • 80.29
  • 108.29
  • 111.29
Question 7
7.
    • The heights of 37 pupils in a school are given below. Calculate the mean height correct to 2 decimal places.
    • Height (in cm)
      less than 129
      less than 135
      less than 141
      less than 147
      less than 153
      No. of pupils
      9
      18
      29
      33
      37
  • 159.57 cm
  • 120.57 cm
  • 123.57 cm
  • 142.57 cm
  • 135.57 cm
Question 8
8.
    • Ages of 10 students are given below. Find the mean.
    • Age (in years)
      10
      11
      12
      13
      14
      15
      No. of students
      1
      2
      2
      2
      2
      1
  • 29
    2
    years
  • 27
    2
    years
  • 13
    years
  • 25
    2
    years
Question 9
9.
Find the mean of first 6 whole numbers.
  • 3
    2
  • 7
    2
  • 5
    2
  • 3
  • 9
    4
Question 10
10.
    • Given the mean of
    • 13
    • samples as
    • 12
      5
      13
    • ,
    • what is the mean if a sample value is
    • increased
    • by
    • 11
    • ?
  • 174
    13
  • 170
    13
  • 146
    11
  • 172
    13
  • 66
    5