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 13 students are given below. Find the mean score.
      • 88
      • 77
      • 77
      • 70
      • 77
      • 73
      • 79
      • 78
      • 77
      • 86
      • 78
      • 84
      • 70
  • 78
  • 76
  • 77
  • 79
  • 80
Question 2
2.
    • Scores of 25 students are given below. Find the mean.
    • Score
      71
      72
      73
      74
      77
      84
      86
      87
      88
      90
      No. of students
      3
      2
      2
      1
      4
      4
      4
      1
      2
      2
  • 402
    5
  • 2058
    25
  • 2033
    25
  • 2008
    25
  • 2009
    25
Question 3
3.
    • Rainfall of 30 days are given below. Find the mean.
    • Rainfall (in mm)
      5
      7
      8
      9
      10
      11
      13
      No. of days
      5
      4
      5
      3
      1
      5
      7
  • 48
    5
    mm
  • 51
    5
    mm
  • 56
    5
    mm
  • 47
    5
    mm
  • 46
    5
    mm
Question 4
4.
    • If the sum of the following frequency distribution is
    • 37
    • ,
    • find the value of 'x'.
    • Class-Interval
      Frequency
      10 - 15
      6
      16 - 21
      2
      22 - 27
      7
      28 - 33
      8
      34 - 39
      6
      40 - 45
      x
  • 7
  • 8
  • 11
  • 6
  • 9
Question 5
5.
Find the mean of all prime numbers between 50 and 100.
  • 364
    5
  • 512
    7
  • 366
    5
  • 220
    3
  • 368
    5
Question 6
6.
    • Heights of 30 plants are given below. Find the mean.
    • Height (in cm)
      53
      59
      60
      61
      68
      81
      85
      92
      94
      No. of plants
      3
      5
      2
      1
      3
      2
      1
      4
      9
  • 77
    cm
  • 233
    3
    cm
  • 230
    3
    cm
  • 232
    3
    cm
  • 236
    3
    cm
Question 7
7.
    • Temperatures of 130 days (in °C) are given below. Calculate the mean temperature from the given histogram.
  • 39.71 °C
  • 36.71 °C
  • 34.71 °C
  • 42.71 °C
  • 44.71 °C
Question 8
8.
    • Temperatures of 30 days are given below. Find the mean.
    • Temperature (in degree C)
      25
      26
      29
      30
      31
      32
      33
      34
      35
      No. of days
      4
      7
      2
      1
      4
      5
      3
      3
      1
  • 91
    3
    °C
  • 30
    °C
  • 89
    3
    °C
  • 95
    3
    °C
  • 92
    3
    °C
Question 9
9.
Find the mean of first 7 multiples of 3.
  • 9
  • 15
  • 12
  • 11
  • 13
Question 10
10.
    • The marks obtained by 52 students of a class in an examination is given below. Calculate the mean mark correct to 2 decimal places.
    • Marks
      less than 15
      less than 25
      less than 35
      less than 45
      less than 55
      less than 65
      No. of students
      10
      20
      30
      37
      43
      52
  • 38.08
  • 33.08
  • 36.08
  • 30.08
  • 28.08