CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade IX - Statistics
Question 1
1.
    • The mean of
    • 6
    • numbers is
    • 6
      1
      2
    • .
    • Upon
    • excluding
    • one number,
    • the mean becomes
    • 6
      2
      5
    • .
    • Find the
    • excluded
    • number.
  • 7
  • 8
  • 5
  • 10
  • 6
Question 2
2.
Given the bar graph, find the maximum frequency
  • 85
  • 95
  • 80
  • 100
  • 90
Question 3
3.
Following bar graph gives the average temperature of a place during a week. Find the day that has minimum temperature.
  • Fri.
  • Sat.
  • Thurs.
  • Tues.
  • Sun.
Question 4
4.
    • Given the sample data, prepare the class interval table in
    • inclusive
    • form with
    • 3
    • as min value and a class size of
    • 8
    • .
      • 21
      • 48
      • 19
      • 3
      • 16
      • 50
      • 34
      • 20
      • 23
      • 41
      • 44
      • 49
      • 10
      • 40
      • 34
      • 21
  • Class-Interval
    3 - 10
    11 - 18
    19 - 26
    27 - 34
    35 - 42
    43 - 50
    Frequency
    2
    5
    1
    2
    2
    4
  • Class-Interval
    3 - 10
    11 - 18
    19 - 26
    27 - 34
    35 - 42
    43 - 50
    Frequency
    2
    1
    5
    2
    2
    4
  • Class-Interval
    3 - 10
    11 - 18
    19 - 26
    27 - 34
    35 - 42
    43 - 50
    Frequency
    2
    1
    9
    2
    2
    4
  • Class-Interval
    3 - 10
    11 - 18
    19 - 26
    27 - 34
    35 - 42
    43 - 50
    Frequency
    2
    4
    5
    2
    2
    1
  • Class-Interval
    3 - 11
    11 - 19
    19 - 27
    27 - 35
    35 - 43
    43 - 51
    Frequency
    2
    1
    5
    2
    2
    4
Question 5
5.
    • Heights of 211 students (in cm) are given below.
    • Identify the class interval table for the given histogram and frequency polygon on the same graph.
  • Height (in cm)
    121 - 131
    132 - 142
    143 - 153
    154 - 164
    165 - 175
    176 - 186
    187 - 197
    No. of students
    19
    46
    49
    39
    8
    23
    27
  • Height (in cm)
    121 - 131
    132 - 142
    143 - 153
    154 - 164
    165 - 175
    176 - 186
    187 - 197
    No. of students
    19
    49
    46
    39
    8
    23
    27
  • Height (in cm)
    121 - 131
    132 - 142
    143 - 153
    154 - 164
    165 - 175
    176 - 186
    187 - 197
    No. of students
    19
    49
    46
    42
    8
    23
    27
  • Height (in cm)
    121 - 131
    132 - 142
    143 - 153
    154 - 164
    165 - 175
    176 - 186
    187 - 197
    No. of students
    19
    49
    42
    39
    8
    23
    27
  • Height (in cm)
    121 - 131
    132 - 142
    143 - 153
    154 - 164
    165 - 175
    176 - 186
    187 - 197
    No. of students
    19
    27
    46
    39
    8
    23
    49
Question 6
6.
    • If the upper and lower limit of class interval are 54 and 46 respectively, then the class interval is
  • 46
    -
    54.5
  • 45.5
    -
    54.5
  • 46.5
    -
    53.5
  • 45.5
    -
    54
  • 46
    -
    54
Question 7
7.
There are certain creatures in a zoo. Find the type of creature that has maximum presense in the zoo.
  • Water animals
  • Domestic animals
  • Land animals
  • Wild animals
  • Beast animals
Question 8
8.
    • Scores of 25 students are given below. Find the mean.
    • Score
      71
      72
      78
      79
      87
      90
      No. of students
      8
      1
      3
      4
      2
      7
  • 399
    5
  • 2044
    25
  • 2019
    25
  • 1994
    25
  • 1996
    25
Question 9
9.
Identify the class interval table for the given histogram.
  • Class-Interval
    136 - 140
    140 - 144
    144 - 148
    148 - 152
    152 - 156
    Frequency
    47
    105
    99
    35
    71
  • Class-Interval
    136 - 140
    140 - 144
    144 - 148
    148 - 152
    152 - 156
    Frequency
    47
    99
    101
    35
    71
  • Class-Interval
    136 - 140
    140 - 144
    144 - 148
    148 - 152
    152 - 156
    Frequency
    47
    101
    101
    35
    71
  • Class-Interval
    136 - 140
    140 - 144
    144 - 148
    148 - 152
    152 - 156
    Frequency
    47
    71
    99
    35
    101
  • Class-Interval
    136 - 140
    140 - 144
    144 - 148
    148 - 152
    152 - 156
    Frequency
    47
    101
    99
    35
    71
Question 10
10.
    • Daily wages of 15 labourers (in ₹) are given below. Find the median wage.
      • 318
      • 321
      • 452
      • 316
      • 367
      • 317
      • 406
      • 423
      • 369
      • 441
      • 377
      • 363
      • 432
      • 302
      • 402
  • ₹
    369.00
  • ₹
    368.00
  • ₹
    370.00
  • ₹
    367.00
  • ₹
    371.00