SSC Board Practice

Class VI Class VII Class VIII Class IX Class X
SSC Grade IX - Statistics
Question 1
1.
    • Ages of 11 students (in years) are given below. Find the mean age.
      • 10
      • 15
      • 14
      • 12
      • 14
      • 13
      • 11
      • 15
      • 10
      • 11
      • 10
  • 135
    11
    years
  • 146
    11
    years
  • 136
    11
    years
  • 157
    11
    years
  • 137
    11
    years
Question 2
2.
    • Convert the continuous form of the class interval 22.5 - 31.5 to discontinuous form
  • 23
    -
    31
  • 22.5
    -
    31
  • 23.5
    -
    30.5
  • 22.5
    -
    31.5
  • 23
    -
    31.5
Question 3
3.
    • The marks obtained by 12 students in a test are given below. Find the mean of their marks when the marks of each student is increased by 6.
      • 21
      • 27
      • 49
      • 36
      • 34
      • 48
      • 40
      • 10
      • 33
      • 35
      • 36
      • 15
  • 37
  • 39
  • 38
  • 41
  • 35
Question 4
4.
    • Convert the exclusive form of the class interval 11.5 - 18.5 to inclusive form
  • 11.5
    -
    18
  • 11.5
    -
    18.5
  • 12.5
    -
    17.5
  • 12
    -
    18.5
  • 12
    -
    18
Question 5
5.
    • The marks obtained by 12 students in a test are given below. Find their mean marks.
      • 39
      • 39
      • 45
      • 20
      • 23
      • 26
      • 21
      • 31
      • 28
      • 30
      • 14
      • 10
  • 163
    6
  • 161
    6
  • 109
    4
  • 217
    8
  • 55
    2
Question 6
6.
    • Scores of 15 students are given below. Find the median.
    • Score
      70
      74
      77
      80
      81
      84
      86
      88
      89
      No. of students
      2
      1
      2
      2
      2
      2
      1
      2
      1
  • 83
  • 79
  • 82
  • 80
  • 81
Question 7
7.
    • Find the cumulative frequency of class
    • 31
      -
      40
    • .
    • Class-Interval
      11 - 20
      21 - 30
      31 - 40
      41 - 50
      51 - 60
      61 - 70
      71 - 80
      Frequency
      20
      24
      17
      9
      20
      14
      15
  • 60
  • 64
  • 61
  • 62
  • 58
Question 8
8.
    • The mid value of the class with frequency x is
    • Class-Interval
      Frequency
      11 - 16
      17
      16 - 21
      22
      21 - 26
      5
      26 - 31
      x
      31 - 36
      10
  • 113
    4
  • 59
    2
  • 29
  • 55
    2
  • 57
    2
Question 9
9.
    • Given class interval
    • 40
    • -
    • 43
    • in exclusive form, its
    • class mark is
  • 83
    2
  • 85
    2
  • 165
    4
  • 81
    2
  • 42
Question 10
10.
    • Find the sum of frequencies for the given table
    • Value
      28
      31
      36
      44
      45
      49
      53
      58
      64
      82
      Frequency
      1
      1
      1
      1
      1
      1
      1
      1
      1
      1
  • 8
  • 13
  • 11
  • 9
  • 10