ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade IX - Mean and Median of Ungrouped Data
Question 1
1.
    • If the mean of
    • 6
    • samples is
    • 27
    • ,
    • what is the new mean if
    • 7
    • is added to each number.
  • 36
  • 33
  • 34
  • 35
  • 32
Question 2
2.
    • Weights of 13 students (in kg) are given below. Find the median weight.
      • 57
      • 47
      • 52
      • 47
      • 40
      • 56
      • 54
      • 56
      • 46
      • 56
      • 54
      • 52
      • 49
  • 54
    kg
  • 52
    kg
  • 51
    kg
  • 53
    kg
  • 50
    kg
Question 3
3.
    • Temperatures of 11 days (in °C) are given below. Find the median temperature.
      • 31
      • 29
      • 35
      • 28
      • 31
      • 32
      • 32
      • 30
      • 34
      • 30
      • 32
  • 31
    °C
  • 33
    °C
  • 30
    °C
  • 29
    °C
  • 32
    °C
Question 4
4.
    • Given the mean of
    • 10
    • samples as
    • 6
    • ,
    • what is the new mean if two samples
    • 4
    • and
    • 7
    • are added ?
  • 23
    4
  • 61
    10
  • 73
    12
  • 81
    14
  • 71
    12
Question 5
5.
    • Temperatures of 20 days are given below. Find the mean.
    • Temperature (in degree C)
      25
      27
      28
      29
      31
      32
      34
      No. of days
      3
      2
      2
      3
      3
      4
      3
  • 30
    °C
  • 121
    4
    °C
  • 127
    4
    °C
  • 119
    4
    °C
  • 123
    4
    °C
Question 6
6.
    • The marks obtained by 15 students in a test are given below. Find the mean of their marks when the marks of each student is decreased by 4.
      • 42
      • 13
      • 32
      • 28
      • 42
      • 35
      • 30
      • 14
      • 49
      • 40
      • 8
      • 15
      • 41
      • 31
      • 4
  • 362
    15
  • 122
    5
  • 364
    15
  • 412
    17
  • 316
    13
Question 7
7.
Find the median of all prime numbers between 20 and 70.
  • 44
  • 42
  • 46
  • 40
  • 43
Question 8
8.
    • If the mean of
    • 8
    • samples is
    • 27
      3
      8
    • ,
    • what is the new mean if each number is multiplied by
    • 8
    • .
  • 219
  • 216
  • 221
  • 220
  • 218
Question 9
9.
    • Daily wages of 10 labourers (in ₹) are given below. Find the mean wage.
      • 376
      • 324
      • 354
      • 361
      • 377
      • 408
      • 381
      • 308
      • 392
      • 326
  • ₹
    360.70
  • ₹
    360.80
  • ₹
    362.70
  • ₹
    360.90
  • ₹
    361.70
Question 10
10.
Find the median of all the factors of 10.
  • 9
    2
  • 7
    2
  • 13
    4
  • 4
  • 5
    2