CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade IX - Statistics
Question 1
1.
On a certain day, the temperature in a city was recorded as shown below. Find the time that has minimum temperature.
  • 3 p.m.
  • 5 p.m.
  • 9 a.m.
  • 11 a.m.
  • 1 p.m.
Question 2
2.
Which of the following tables represent the given histogram with varying base widths
  • Rainfall (in mm)
    7 - 17
    17 - 57
    57 - 67
    67 - 107
    107 - 147
    No. of days
    5
    11
    15
    8
    9
  • Rainfall (in mm)
    7 - 17
    17 - 57
    57 - 67
    67 - 107
    107 - 147
    No. of days
    5
    11
    19
    8
    9
  • Rainfall (in mm)
    7 - 17
    17 - 57
    57 - 67
    67 - 107
    107 - 147
    No. of days
    5
    3
    12
    2
    2
  • Rainfall (in mm)
    7 - 17
    17 - 57
    57 - 67
    67 - 107
    107 - 147
    No. of days
    5
    3
    15
    2
    2
  • Rainfall (in mm)
    7 - 17
    17 - 57
    57 - 67
    67 - 107
    107 - 147
    No. of days
    5
    13
    15
    8
    9
Question 3
3.
Which of the following are continuous variables?
a)
Number of members in a family.
b)
Heights of children in a class.
c)
Number of workers in a factory.
d)
Weights of persons in a group.
e)
Wages of workers in a factory.
  • {a,b,d}
  • {b,d,e}
  • {a,c,e}
  • {c,d}
  • {a,b}
Question 4
4.
    • Given the sample data, prepare the class interval table in
    • inclusive
    • form with
    • 16
    • as min value and a class size of
    • 8
    • .
      • 31
      • 22
      • 26
      • 16
      • 19
      • 16
      • 26
      • 39
      • 33
      • 39
      • 39
      • 35
      • 25
      • 16
      • 44
      • 17
      • 46
      • 24
      • 16
      • 36
  • Class-Interval
    16 - 23
    24 - 31
    32 - 39
    40 - 47
    Frequency
    7
    5
    6
    2
  • Class-Interval
    16 - 23
    24 - 31
    32 - 39
    40 - 47
    Frequency
    7
    6
    5
    2
  • Class-Interval
    16 - 23
    24 - 31
    32 - 39
    40 - 47
    Frequency
    7
    1
    6
    2
  • Class-Interval
    16 - 23
    24 - 31
    32 - 39
    40 - 47
    Frequency
    2
    5
    6
    7
  • Class-Interval
    16 - 24
    24 - 32
    32 - 40
    40 - 48
    Frequency
    7
    5
    6
    2
Question 5
5.
    • Weights of 153 students (in kg) are given below.
    • Identify the class interval table for the given frequency polygon.
  • Weight (in kg)
    43 - 52
    53 - 62
    63 - 72
    73 - 82
    83 - 92
    93 - 102
    No. of students
    30
    28
    32
    11
    23
    29
  • Weight (in kg)
    43 - 52
    53 - 62
    63 - 72
    73 - 82
    83 - 92
    93 - 102
    No. of students
    30
    32
    29
    11
    23
    28
  • Weight (in kg)
    43 - 52
    53 - 62
    63 - 72
    73 - 82
    83 - 92
    93 - 102
    No. of students
    30
    29
    32
    13
    23
    28
  • Weight (in kg)
    43 - 52
    53 - 62
    63 - 72
    73 - 82
    83 - 92
    93 - 102
    No. of students
    30
    29
    28
    11
    23
    28
  • Weight (in kg)
    43 - 52
    53 - 62
    63 - 72
    73 - 82
    83 - 92
    93 - 102
    No. of students
    30
    29
    32
    11
    23
    28
Question 6
6.
2250 students of a school use different modes of travel to school. Identify the table for the given bar diagram.
  • Mode of travel
    School Bus
    School Van
    Scooter
    Car
    RTC Bus
    Auto
    Bicycle
    No. of students
    387
    450
    198
    369
    324
    207
    315
  • Mode of travel
    School Bus
    School Van
    Scooter
    Car
    RTC Bus
    Auto
    Bicycle
    No. of students
    198
    207
    315
    324
    369
    387
    450
  • Mode of travel
    School Bus
    School Van
    Scooter
    Car
    RTC Bus
    Auto
    Bicycle
    No. of students
    315
    450
    387
    369
    198
    324
    207
  • Mode of travel
    School Bus
    School Van
    Scooter
    Car
    RTC Bus
    Auto
    Bicycle
    No. of students
    369
    450
    198
    324
    387
    207
    315
  • Mode of travel
    School Bus
    School Van
    Scooter
    Car
    RTC Bus
    Auto
    Bicycle
    No. of students
    387
    198
    207
    315
    369
    450
    324
Question 7
7.
Identify the class interval table for the given histogram.
  • Weight (in kg)
    15 - 17
    17 - 19
    19 - 21
    21 - 23
    23 - 25
    25 - 27
    27 - 29
    29 - 31
    No. of students
    16
    14
    29
    24
    22
    27
    29
    22
  • Weight (in kg)
    15 - 17
    17 - 19
    19 - 21
    21 - 23
    23 - 25
    25 - 27
    27 - 29
    29 - 31
    No. of students
    16
    22
    27
    24
    22
    27
    29
    14
  • Weight (in kg)
    15 - 17
    17 - 19
    19 - 21
    21 - 23
    23 - 25
    25 - 27
    27 - 29
    29 - 31
    No. of students
    16
    22
    24
    29
    22
    27
    29
    14
  • Weight (in kg)
    15 - 17
    17 - 19
    19 - 21
    21 - 23
    23 - 25
    25 - 27
    27 - 29
    29 - 31
    No. of students
    16
    22
    29
    24
    27
    27
    29
    14
  • Weight (in kg)
    15 - 17
    17 - 19
    19 - 21
    21 - 23
    23 - 25
    25 - 27
    27 - 29
    29 - 31
    No. of students
    16
    22
    29
    24
    22
    27
    29
    14
Question 8
8.
    • The class size used in the below table is
    • Class-Interval
      34 - 41
      41 - 48
      48 - 55
      55 - 62
      62 - 69
      69 - 76
      76 - 83
      Frequency
      27
      8
      26
      19
      2
      29
      2
  • 6
  • 7
  • 9
  • 4
  • 8
Question 9
9.
    • Heights of 160 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)
    125 - 132
    132 - 139
    139 - 146
    146 - 153
    153 - 160
    160 - 167
    167 - 174
    174 - 181
    No. of students
    36
    15
    28
    14
    16
    27
    5
    19
  • Height (in cm)
    125 - 132
    132 - 139
    139 - 146
    146 - 153
    153 - 160
    160 - 167
    167 - 174
    174 - 181
    No. of students
    36
    15
    14
    28
    16
    27
    5
    19
  • Height (in cm)
    125 - 132
    132 - 139
    139 - 146
    146 - 153
    153 - 160
    160 - 167
    167 - 174
    174 - 181
    No. of students
    36
    15
    31
    14
    16
    27
    5
    19
  • Height (in cm)
    125 - 132
    132 - 139
    139 - 146
    146 - 153
    153 - 160
    160 - 167
    167 - 174
    174 - 181
    No. of students
    36
    15
    28
    14
    11
    27
    5
    19
  • Height (in cm)
    125 - 132
    132 - 139
    139 - 146
    146 - 153
    153 - 160
    160 - 167
    167 - 174
    174 - 181
    No. of students
    36
    19
    28
    14
    16
    27
    5
    15
Question 10
10.
    • Daily wages of 14 labourers (in ₹) are given below. Find the mean wage.
      • 500
      • 341
      • 398
      • 378
      • 379
      • 373
      • 395
      • 402
      • 481
      • 324
      • 370
      • 423
      • 350
      • 483
  • ₹
    399.93
  • ₹
    399.79
  • ₹
    400.79
  • ₹
    399.86
  • ₹
    401.79