SSC Board Practice

Class VI Class VII Class VIII Class IX Class X
SSC Grade IX - Statistics
Question 1
1.
    • Rainfall of 169 days (in mm) are given below.
    • Identify the class interval table for the given histogram.
  • Rainfall (in mm)
    5 - 14
    14 - 23
    23 - 32
    32 - 41
    41 - 50
    50 - 59
    No. of days
    21
    48
    20
    36
    16
    24
  • Rainfall (in mm)
    5 - 14
    14 - 23
    23 - 32
    32 - 41
    41 - 50
    50 - 59
    No. of days
    21
    48
    20
    40
    16
    24
  • Rainfall (in mm)
    5 - 14
    14 - 23
    23 - 32
    32 - 41
    41 - 50
    50 - 59
    No. of days
    21
    48
    18
    40
    16
    24
  • Rainfall (in mm)
    5 - 14
    14 - 23
    23 - 32
    32 - 41
    41 - 50
    50 - 59
    No. of days
    21
    20
    48
    40
    16
    24
  • Rainfall (in mm)
    5 - 14
    14 - 23
    23 - 32
    32 - 41
    41 - 50
    50 - 59
    No. of days
    21
    24
    20
    40
    16
    48
Question 2
2.
The arithmetic mean of a + 2, a, and a - 2 is
  • a
  • 3a
  • a - 2
  • a + 2
Question 3
3.
    • The number of children in 18 families are given below. Identify the frequency distribution table for the given data.
      • 4
      • 4
      • 5
      • 3
      • 1
      • 0
      • 1
      • 0
      • 1
      • 4
      • 1
      • 3
      • 1
      • 5
      • 2
      • 3
      • 5
      • 0
  • No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    4
    3
    4
    1
    5
    1
  • No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    3
    5
    1
    3
    3
    3
  • No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    5
    5
    1
    2
    2
    3
  • No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    2
    5
    1
    4
    3
    3
Question 4
4.
    • Temperatures of 30 days are given below. Find the mean.
    • Temperature (in degree C)
      25
      26
      27
      28
      29
      30
      32
      33
      34
      35
      No. of days
      1
      2
      3
      2
      4
      6
      5
      3
      2
      2
  • 907
    30
    °C
  • 967
    30
    °C
  • 454
    15
    °C
  • 937
    30
    °C
  • 303
    10
    °C
Question 5
5.
    • The scores obtained by 9 students in a test are given below. Find the range.
      • 7
      • 16
      • 6
      • 5
      • 18
      • 20
      • 12
      • 19
      • 2
  • 11
    2
    3
  • 2
  • 20
  • 12
  • 18
Question 6
6.
If the length of the class is 18, then the number of class intervals needed to represent data with range 70 is
  • 2
  • 3
  • 4
  • 5
  • 6
Question 7
7.
    • Heights of 12 students (in cm) are given below. Find the mean height.
      • 172
      • 169
      • 126
      • 134
      • 168
      • 148
      • 157
      • 149
      • 162
      • 165
      • 140
      • 133
  • 152
    cm
  • 1825
    12
    cm
  • 1823
    12
    cm
  • 1847
    12
    cm
  • 1835
    12
    cm
Question 8
8.
    • Given an even number of random samples with the middle two samples as
    • x +
    • 26
    • and x +
    • 32
    • and the median as
    • 34
    • ,
    • find the value of x.
  • 2
  • 5
  • 6
  • 7
  • 4
Question 9
9.
    • In exclusive form representation, the observation
    • 11
    • falls in which class?
  • 6
    -
    11
  • 11
    -
    21
  • 1
    -
    11
  • 21
    -
    31
  • 16
    -
    26
Question 10
10.
    • The marks obtained by 13 students in a test are given below. Find their mean marks.
      • 41
      • 44
      • 38
      • 10
      • 5
      • 33
      • 43
      • 22
      • 37
      • 10
      • 23
      • 11
      • 26
  • 343
    13
  • 341
    13
  • 79
    3
  • 345
    13
  • 291
    11