ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade X - Measures of Central Tendency
Question 1
1.
    • Scores of 14 students are given below. Find the mean score.
      • 76
      • 75
      • 72
      • 72
      • 80
      • 90
      • 83
      • 87
      • 76
      • 74
      • 72
      • 84
      • 71
      • 86
  • 551
    7
  • 549
    7
  • 556
    7
  • 550
    7
  • 563
    7
Question 2
2.
    • If the mean of
      • 1
      • 5
    • x
      • 7
      • 4
    • is
    • 4
    • ,
    • find the value of x.
  • 3
  • 2
  • 6
  • 0
  • 4
Question 3
3.
The arithmetic mean of a + 2, a, and a - 2 is
  • a - 2
  • a + 2
  • 3a
  • a
Question 4
4.
    • Ages of 20 students are given below. Find the mean.
    • Age (in years)
      10
      11
      12
      13
      15
      No. of students
      2
      2
      3
      4
      9
  • 53
    4
    years
  • 55
    4
    years
  • 57
    4
    years
  • 61
    4
    years
  • 27
    2
    years
Question 5
5.
    • Given the mean of
    • 5
    • samples as
    • 9
      1
      5
    • ,
    • what is the mean if a sample value is
    • increased
    • by
    • 16
    • ?
  • 64
    5
  • 86
    7
  • 62
    5
  • 12
  • 38
    3
Question 6
6.
    • Temperatures of 161 days (in °C) are given below. Calculate the mean temperature from the given histogram.
  • 63.56 °C
  • 55.56 °C
  • 58.56 °C
  • 61.56 °C
  • 53.56 °C
Question 7
7.
    • Given the mean of
    • 12
    • samples as
    • 5
    • ,
    • what is the new mean if two samples
    • 5
    • and
    • 10
    • are removed ?
  • 9
    2
  • 11
    2
  • 17
    4
  • 5
  • 7
    2
Question 8
8.
    • If the mean of
    • 5
    • samples is
    • 25
      1
      5
    • ,
    • what is the new mean if
    • 9
    • is added to each number.
  • 173
    5
  • 239
    7
  • 171
    5
  • 103
    3
  • 169
    5
Question 9
9.
Find the mean of the first 20 odd numbers.
  • 21
  • 23
  • 17
  • 20
  • 19
Question 10
10.
    • Weights of 10 students are given below. Find the mean.
    • Weight (in kg)
      40
      41
      42
      53
      59
      No. of students
      1
      4
      1
      1
      3
  • 238
    5
    kg
  • 243
    5
    kg
  • 248
    5
    kg
  • 239
    5
    kg
  • 48
    kg