SSC Board Practice

Class VI Class VII Class VIII Class IX Class X
SSC Grade IX - Statistics
Question 1
1.
    • Weights of 10 students are given below. Find the mean.
    • Weight (in kg)
      42
      43
      45
      49
      54
      59
      No. of students
      1
      1
      3
      2
      1
      2
  • 50
    kg
  • 49
    kg
  • 51
    kg
  • 48
    kg
  • 47
    kg
Question 2
2.
Find the mean of first 5 multiples of 3.
  • 8
  • 11
  • 6
  • 9
  • 10
Question 3
3.
    • The class boundaries of the class with frequency x is
    • Class-Interval
      Frequency
      38 - 44
      22
      44 - 50
      x
      50 - 56
      28
      56 - 62
      12
      62 - 68
      13
  • 44
    -
    50.5
  • 43.5
    -
    50
  • 43.5
    -
    50.5
  • 44.5
    -
    49.5
  • 44
    -
    50
Question 4
4.
    • Convert the exclusive form of the class interval 38.5 - 46.5 to inclusive form
  • 39
    -
    46.5
  • 38.5
    -
    46
  • 39
    -
    46
  • 38.5
    -
    46.5
  • 39.5
    -
    45.5
Question 5
5.
    • Find the cumulative frequency of class
    • 26
      -
      32
    • .
    • Class-Interval
      19 - 25
      26 - 32
      33 - 39
      40 - 46
      47 - 53
      Frequency
      17
      8
      7
      19
      8
  • 23
  • 25
  • 24
  • 26
  • 28
Question 6
6.
    • Scores of 30 students are given below. Find the mean.
    • Score
      70
      74
      76
      78
      83
      84
      87
      89
      90
      No. of students
      1
      8
      5
      1
      2
      4
      3
      5
      1
  • 413
    5
  • 404
    5
  • 403
    5
  • 81
  • 408
    5
Question 7
7.
    • Following are the ages (in years) of patients getting medical treatment in a hospital. Identify the cumulative frequency of the given grouped data.
    • Age (in years)
      20 - 25
      26 - 31
      32 - 37
      38 - 43
      No. of Patients
      18
      13
      55
      22
  • Age (in years)
    Cumulative Frequency
    20 - 25
    22
    26 - 31
    35
    32 - 37
    90
    38 - 43
    108
  • Age (in years)
    Cumulative Frequency
    20 - 25
    18
    26 - 31
    73
    32 - 37
    86
    38 - 43
    108
  • Age (in years)
    Cumulative Frequency
    20 - 25
    18
    26 - 31
    33
    32 - 37
    88
    38 - 43
    110
  • Age (in years)
    Cumulative Frequency
    20 - 25
    18
    26 - 31
    31
    32 - 37
    83
    38 - 43
    105
  • Age (in years)
    Cumulative Frequency
    20 - 25
    18
    26 - 31
    31
    32 - 37
    86
    38 - 43
    108
Question 8
8.
    • In exclusive form representation, the observation
    • 13
    • falls in which class?
  • 18
    -
    28
  • 13
    -
    23
  • 8
    -
    13
  • 3
    -
    13
  • 23
    -
    33
Question 9
9.
    • Rainfall of 30 days are given below. Find the mean.
    • Rainfall (in mm)
      5
      6
      7
      8
      9
      10
      11
      12
      13
      14
      15
      No. of days
      2
      2
      3
      4
      4
      4
      1
      3
      4
      2
      1
  • 59
    6
    mm
  • 49
    5
    mm
  • 323
    30
    mm
  • 353
    30
    mm
  • 293
    30
    mm
Question 10
10.
Find the median of all the factors of 10.
  • 9
    2
  • 7
    2
  • 5
    2
  • 4
  • 13
    4