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.
    • Temperatures of 13 days (in °C) are given below. Find the mean temperature.
      • 26
      • 33
      • 31
      • 33
      • 28
      • 34
      • 29
      • 31
      • 35
      • 27
      • 29
      • 28
      • 35
  • 425
    13
    °C
  • 401
    13
    °C
  • 399
    13
    °C
  • 412
    13
    °C
  • 400
    13
    °C
Question 2
2.
Find the mean of all prime numbers between 30 and 80.
  • 331
    6
  • 221
    4
  • 441
    8
  • 111
    2
  • 329
    6
Question 3
3.
    • Given the mean of
    • 10
    • samples as
    • 4
      1
      2
    • ,
    • what is the new mean if two samples
    • 9
    • and
    • 8
    • are added ?
  • 41
    8
  • 21
    4
  • 31
    6
  • 29
    6
  • 11
    2
Question 4
4.
    • Given an even number of random samples with the middle two samples as
    • x +
    • 32
    • and x +
    • 34
    • and the median as
    • 35
    • ,
    • find the value of x.
  • 4
  • 3
  • -1
  • 2
  • 1
Question 5
5.
    • Heights of 15 students are given below. Find the mean.
    • Height (in cm)
      128
      135
      142
      159
      162
      170
      No. of students
      1
      1
      7
      4
      1
      1
  • 448
    3
    cm
  • 451
    3
    cm
  • 445
    3
    cm
  • 446
    3
    cm
  • 149
    cm
Question 6
6.
    • Daily wages of 11 labourers (in ₹) are given below. Find the mean wage.
      • 323
      • 449
      • 476
      • 381
      • 499
      • 397
      • 309
      • 466
      • 424
      • 326
      • 482
  • ₹
    410.00
  • ₹
    412.00
  • ₹
    413.00
  • ₹
    411.00
  • ₹
    414.00
Question 7
7.
Find the mean of first 7 whole numbers.
  • 4
  • 2
  • 1
  • 3
  • 5
Question 8
8.
    • If the mean of the following frequency distribution is
    • 7
      23
      30
    • ,
    • find the value of 'x'.
    • Value
      Frequency
      3
      3
      4
      1
      5
      x
      6
      3
      7
      4
      8
      4
      9
      2
      10
      3
      11
      5
      12
      2
  • 1
  • 2
  • 4
  • 6
  • 3
Question 9
9.
    • Temperatures of 30 days are given below. Find the median.
    • Temperature (in degree C)
      25
      26
      27
      28
      29
      32
      33
      34
      35
      No. of days
      2
      1
      3
      4
      7
      3
      4
      3
      3
  • 28
    °C
  • 30
    °C
  • 29
    °C
  • 27
    °C
  • 31
    °C
Question 10
10.
    • Given the mean of
    • 12
    • samples as
    • 5
      7
      12
    • ,
    • what is the new mean if two samples
    • 1
    • and
    • 9
    • are removed ?
  • 11
    2
  • 47
    8
  • 59
    10
  • 57
    10
  • 67
    12