ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade X - Measures of Central Tendency
Question 1
1.
    • The daily wage of 38 workers of a factory is given below. Calculate the mean wage correct to 2 decimal places.
    • Daily income (in Rs)
      less than 110
      less than 120
      less than 130
      less than 140
      less than 150
      No. of workers
      9
      16
      24
      32
      38
  • ₹140.68
  • ₹108.68
  • ₹123.68
  • ₹111.68
Question 2
2.
    • If the sum of the following frequency distribution is
    • 38
    • ,
    • find the value of 'x'.
    • Class-Interval
      Frequency
      20 - 30
      6
      31 - 41
      8
      42 - 52
      2
      53 - 63
      8
      64 - 74
      x
      75 - 85
      10
  • 7
  • 5
  • 3
  • 1
  • 4
Question 3
3.
    • Scores of 214 students are given below. Calculate the mean score from the given histogram.
  • 149.46
  • 97.46
  • 106.46
  • 135.46
  • 122.46
Question 4
4.
Find the mean of the first 20 odd numbers.
  • 20
  • 21
  • 19
  • 17
  • 22
Question 5
5.
    • Given the mean of
    • 11
    • samples as
    • 7
      9
      11
    • ,
    • what is the mean if a sample value is
    • increased
    • by
    • 19
    • ?
  • 107
    11
  • 105
    11
  • 29
    3
  • 103
    11
  • 123
    13
Question 6
6.
    • The mean of
    • 6
    • numbers is
    • 6
      1
      6
    • .
    • Upon
    • adding
    • one number,
    • the mean becomes
    • 5
      6
      7
    • .
    • Find the
    • included
    • number.
  • 6
  • 4
  • 3
  • 5
  • 2
Question 7
7.
    • Ages of 12 students (in years) are given below. Find the mean age.
      • 13
      • 10
      • 15
      • 14
      • 14
      • 10
      • 10
      • 10
      • 10
      • 10
      • 15
      • 14
  • 49
    4
    years
  • 169
    12
    years
  • 145
    12
    years
  • 157
    12
    years
  • 73
    6
    years
Question 8
8.
    • The marks obtained by 14 students in a test are given below. Find the mean of their marks when the marks of each student is doubled.
      • 10
      • 20
      • 19
      • 23
      • 27
      • 3
      • 37
      • 30
      • 29
      • 18
      • 38
      • 42
      • 14
      • 29
  • 341
    7
  • 243
    5
  • 145
    3
  • 337
    7
  • 339
    7
Question 9
9.
    • Ages of 191 students (in years) are given below. Calculate the mean age from the given histogram.
  • 41.06 years
  • 49.06 years
  • 44.06 years
  • 39.06 years
  • 47.06 years
Question 10
10.
    • Daily wages of 15 labourers (in ₹) are given below. Find the mean wage.
      • 448
      • 474
      • 379
      • 312
      • 448
      • 322
      • 426
      • 444
      • 342
      • 484
      • 458
      • 466
      • 338
      • 358
      • 454
  • ₹
    410.40
  • ₹
    410.20
  • ₹
    411.20
  • ₹
    412.20
  • ₹
    410.60