ICSE Board Practice

ICSE Grade VII - Average
Question 1
1.
    • If the mean of
    • 8
    • samples is
    • 21
      3

      4
    • ,
    • what is the new mean if
    • 9
    • is subtracted from each number.
  • 25

    2
  • 49

    4
  • 51

    4
  • 53

    4
  • 27

    2
Question 2
2.
Find the mean of first 5 whole numbers.
  • 4
  • 3
  • 2
  • 0
  • 1
Question 3
3.
Find the mean of the first 15 even numbers.
  • 15
  • 16
  • 17
  • 19
  • 13
Question 4
4.
Find the mean of first 8 multiples of 14.
  • 63
  • 62
  • 61
  • 64
  • 66
Question 5
5.
    • The mean of
    • 6
    • numbers is
    • 10
      2

      3
    • .
    • Upon
    • adding
    • one number,
    • the mean becomes
    • 10
    • .
    • Find the
    • included
    • number.
  • 5
  • 7
  • 8
  • 6
  • 4
Question 6
6.
Find the mean of all prime numbers between 20 and 90.
  • 443

    8
  • 111

    2
  • 441

    8
  • 445

    8
  • 553

    10
Question 7
7.
    • The mean of
    • 10
    • numbers is
    • 10
      3

      10
    • .
    • Upon
    • excluding
    • one number,
    • the mean becomes
    • 11
      1

      9
    • .
    • Find the
    • excluded
    • number.
  • 1
  • 3
  • 2
  • 5
  • 4
Question 8
8.
    • Given the mean of
    • 8
    • samples as
    • 10
      1

      8
    • ,
    • what is the mean if a sample value is
    • increased
    • by
    • 19
    • ?
  • 27

    2
  • 25

    2
  • 13
  • 23

    2
  • 49

    4
Question 9
9.
    • The arithmetic mean of
      • 49
      • 37
      • 41
      • 7
      • 46
      • 47
      • 26
    • is
  • 38.14
  • 34.14
  • 35.14
  • 37.14
  • 36.14
Question 10
10.
    • Temperatures of 20 days are given below. Find the mean.
    • Temperature (in degree C)
      25
      26
      27
      28
      30
      31
      33
      35
      No. of days
      2
      2
      2
      2
      4
      2
      2
      4
  • 30
    °C
  • 28
    °C
  • 31
    °C
  • 29
    °C
  • 32
    °C