SSC Board Practice

Class VI Class VII Class VIII Class IX Class X
SSC Grade IX - Statistics
Question 1
1.
    • Heights of 205 students (in cm) are given below.
    • Identify the class interval table for the given histogram.
  • Height (in cm)
    127 - 134
    134 - 141
    141 - 148
    148 - 155
    155 - 162
    162 - 169
    169 - 176
    176 - 183
    No. of students
    11
    41
    27
    44
    9
    19
    16
    38
  • Height (in cm)
    127 - 134
    134 - 141
    141 - 148
    148 - 155
    155 - 162
    162 - 169
    169 - 176
    176 - 183
    No. of students
    11
    41
    44
    27
    9
    19
    16
    38
  • Height (in cm)
    127 - 134
    134 - 141
    141 - 148
    148 - 155
    155 - 162
    162 - 169
    169 - 176
    176 - 183
    No. of students
    11
    41
    24
    44
    9
    19
    16
    38
  • Height (in cm)
    127 - 134
    134 - 141
    141 - 148
    148 - 155
    155 - 162
    162 - 169
    169 - 176
    176 - 183
    No. of students
    11
    38
    27
    44
    9
    19
    16
    41
  • Height (in cm)
    127 - 134
    134 - 141
    141 - 148
    148 - 155
    155 - 162
    162 - 169
    169 - 176
    176 - 183
    No. of students
    11
    41
    27
    44
    11
    19
    16
    38
Question 2
2.
    • Rainfall of 12 days (in mm) are given below. Find the median rainfall.
      • 7
      • 14
      • 6
      • 9
      • 7
      • 8
      • 5
      • 12
      • 9
      • 15
      • 13
      • 15
  • 9
    mm
  • 8
    mm
  • 10
    mm
  • 7
    mm
  • 11
    mm
Question 3
3.
Find the mean of the first 10 odd numbers.
  • 8
  • 11
  • 10
  • 9
  • 13
Question 4
4.
    • Daily wages of 13 labourers (in ₹) are given below. Find the mean wage.
      • 422
      • 370
      • 382
      • 343
      • 459
      • 433
      • 363
      • 407
      • 327
      • 367
      • 458
      • 345
      • 376
  • ₹
    390.62
  • ₹
    388.62
  • ₹
    389.62
  • ₹
    388.69
  • ₹
    388.77
Question 5
5.
    • The number of children in 19 families are given below. Identify the frequency distribution table for the given data.
      • 1
      • 1
      • 5
      • 2
      • 3
      • 3
      • 2
      • 2
      • 2
      • 5
      • 1
      • 3
      • 4
      • 0
      • 5
      • 1
      • 4
      • 0
      • 1
  • No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    2
    5
    4
    3
    2
    3
  • No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    1
    2
    5
    4
    3
    4
  • No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    2
    4
    5
    3
    2
    3
  • No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    3
    5
    3
    3
    2
    3
  • No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    4
    5
    1
    3
    2
    4
Question 6
6.
    • Temperatures of 20 days are given below. Find the mean.
    • Temperature (in degree C)
      25
      27
      29
      30
      31
      32
      33
      35
      No. of days
      1
      2
      4
      1
      1
      4
      5
      2
  • 639
    20
    °C
  • 659
    20
    °C
  • 619
    20
    °C
  • 31
    °C
  • 621
    20
    °C
Question 7
7.
    • The true lower limit and true upper limit of the class with frequency x is
    • Class-Interval
      Frequency
      21 - 27
      11
      27 - 33
      x
      33 - 39
      17
      39 - 45
      19
      45 - 51
      9
  • 27.5
    -
    32.5
  • 26.5
    -
    33
  • 27
    -
    33.5
  • 27
    -
    33
  • 26.5
    -
    33.5
Question 8
8.
    • Given the mean of
    • 9
    • samples as
    • 9
      2
      9
    • ,
    • what is the mean if a sample value is
    • increased
    • by
    • 20
    • ?
  • 35
    3
  • 81
    7
  • 103
    9
  • 125
    11
  • 101
    9
Question 9
9.
    • Scores of 14 students are given below. Find the mode score.
      • 89
      • 75
      • 76
      • 70
      • 79
      • 75
      • 87
      • 86
      • 70
      • 73
      • 80
      • 71
      • 72
      • 70
  • 68
  • 69
  • 70
  • 71
  • 72
Question 10
10.
    • Weights of 12 students (in kg) are given below. Find the mean weight.
      • 45
      • 53
      • 46
      • 58
      • 49
      • 45
      • 47
      • 52
      • 45
      • 46
      • 52
      • 49
  • 611
    12
    kg
  • 49
    kg
  • 589
    12
    kg
  • 599
    12
    kg
  • 587
    12
    kg