EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Statistics
Grade : ICSE Grade VII
License : Non Commercial Use
Question 1
1.
The table below shows the preferred free time activity of 648 school students. Find the pie chart sector angle for "Watching TV"
Activity
Reading books
Watching TV
Dancing
Helping parents
Painting
Playing
No.of students
36
54
108
126
144
180
  • (i)
    31.00°
  • (ii)
    30.00°
  • (iii)
    28.00°
  • (iv)
    32.00°
  • (v)
    29.00°
Question 2
2.
    • Given the mean of
    • 6
    • samples as
    • 11
      5

      6
    • ,
    • what is the mean if a sample value is
    • decreased
    • by
    • 16
    • ?
  • (i)
    53

    6
  • (ii)
    19

    2
  • (iii)
    37

    4
  • (iv)
    55

    6
  • (v)
    73

    8
Question 3
3.
Bharathi fell sick. Her doctor maintained a record of her body temperature, taken every four hours. The following line graph gives data regarding her body temperature. Identify the table for the given line graph.
  • (i)
    Time
    6 a.m
    10 a.m
    2 p.m
    6 p.m
    10 p.m
    Temperature (in degree C)
    39
    37
    47
    35
    32
  • (ii)
    Time
    6 a.m
    10 a.m
    2 p.m
    6 p.m
    10 p.m
    Temperature (in degree C)
    39
    37
    40
    35
    32
  • (iii)
    Time
    6 a.m
    10 a.m
    2 p.m
    6 p.m
    10 p.m
    Temperature (in degree C)
    39
    31
    40
    35
    32
  • (iv)
    Time
    6 a.m
    10 a.m
    2 p.m
    6 p.m
    10 p.m
    Temperature (in degree C)
    39
    37
    40
    35
    24
  • (v)
    Time
    6 a.m
    10 a.m
    2 p.m
    6 p.m
    10 p.m
    Temperature (in degree C)
    39
    37
    40
    42
    32
Question 4
4.
1404 students of a certain locality use different modes of travel to school as shown below. Find the pie chart sector angle for "Car"
Mode of travel
Car
Scooter
School Bus
By Foot
Moped
Auto
Bicycle
School Van
No. of students
36
72
126
198
216
234
252
270
  • (i)
    11.23°
  • (ii)
    7.23°
  • (iii)
    9.23°
  • (iv)
    8.23°
  • (v)
    10.23°
Question 5
5.
The following pie chart shows 1660 students of a school participating in various games. Find the game that has minimum participation.
  • (i)
    basketball
  • (ii)
    football
  • (iii)
    table tennis
  • (iv)
    boxing
  • (v)
    high jump
Question 6
6.
    • A man earns Rs 5265 per month. His expenditure during a month is as follows. Find the pie chart sector angle for "Food"
    • Item
      Savings
      Electricity
      Dish bill
      Misc.
      Rent
      Insurance
      Education
      Food
      Expenses (in rupees)
      360
      450
      495
      630
      675
      810
      900
      945
  • (i)
    64.62°
  • (ii)
    62.62°
  • (iii)
    65.62°
  • (iv)
    66.62°
  • (v)
    63.62°
Question 7
7.
Sum of the angles of various sectors in a pie-diagram
  • (i)
    360°
  • (ii)
    90°
  • (iii)
    180°
  • (iv)
    270°
Question 8
8.
The birth-rate per thousand of 6 countries over a period of time is shown below. Identify the table for the given line graph.
  • (i)
    Country
    Portugal
    Mexico
    Pakistan
    Japan
    Argentina
    Canada
    Birth-rate per thousand
    26
    23
    18
    36
    24
    46
  • (ii)
    Country
    Portugal
    Mexico
    Pakistan
    Japan
    Argentina
    Canada
    Birth-rate per thousand
    26
    30
    25
    36
    24
    46
  • (iii)
    Country
    Portugal
    Mexico
    Pakistan
    Japan
    Argentina
    Canada
    Birth-rate per thousand
    26
    23
    25
    36
    17
    46
  • (iv)
    Country
    Portugal
    Mexico
    Pakistan
    Japan
    Argentina
    Canada
    Birth-rate per thousand
    26
    23
    25
    36
    24
    46
  • (v)
    Country
    Portugal
    Mexico
    Pakistan
    Japan
    Argentina
    Canada
    Birth-rate per thousand
    26
    23
    25
    30
    24
    46
Question 9
9.
There are certain creatures in a zoo. Find the type of creature that has 166 creatures presense in the zoo.
  • (i)
    Land animals
  • (ii)
    Reptiles
  • (iii)
    Water animals
  • (iv)
    Wild animals
  • (v)
    Beast animals
Question 10
10.
    • Given the mean of
    • 12
    • samples as
    • 5
      3

      4
    • ,
    • what is the new mean if two samples
    • 8
    • and
    • 6
    • are removed ?
  • (i)
    21

    4
  • (ii)
    13

    2
  • (iii)
    6
  • (iv)
    9

    2
  • (v)
    11

    2
Question 11
11.
    • The marks obtained by 14 students in a test are given below. Find the mean of their marks when the marks of each student is increased by 2.
      • 9
      • 10
      • 5
      • 34
      • 45
      • 14
      • 11
      • 5
      • 48
      • 1
      • 22
      • 13
      • 46
      • 41
  • (i)
    164

    7
  • (ii)
    212

    9
  • (iii)
    24
  • (iv)
    166

    7
Question 12
12.
1550 students of a certain locality use different modes of travel to school as shown below. Find the mode of travel that has minimum students.
  • (i)
    Auto
  • (ii)
    RTC Bus
  • (iii)
    School Van
  • (iv)
    Scooter
  • (v)
    Bicycle
Question 13
13.
Read the column-graph given below. Find the year that has maximum food grains production.
  • (i)
    2011
  • (ii)
    2010
  • (iii)
    2009
  • (iv)
    2008
  • (v)
    2007
Question 14
14.
On a certain day, the temperature in a city was recorded as shown below. Find the time that has minimum temperature.
  • (i)
    9 a.m.
  • (ii)
    5 p.m.
  • (iii)
    7 a.m.
  • (iv)
    3 p.m.
  • (v)
    1 p.m.
Question 15
15.
    • The mean of
    • 8
    • numbers is
    • 15
    • .
    • Upon
    • adding
    • one number,
    • the mean becomes
    • 15
      1

      9
    • .
    • Find the
    • included
    • number.
  • (i)
    17
  • (ii)
    13
  • (iii)
    15
  • (iv)
    19
  • (v)
    16
Question 16
16.
    • The mean of the below random sample is
    • 27
      2

      5
    • .
    • Find the missing quantity.
      • 21
      • 23
      • 15
      • 42
      • 44
      • 22
      • 18
      • 24
      • x
      • 30
  • (i)
    36
  • (ii)
    35
  • (iii)
    33
  • (iv)
    34
  • (v)
    37
Question 17
17.
A survey of 1000 school students was done to knowthe preferred free time activity. Find the activity that has minimum preference.
  • (i)
    Reading books
  • (ii)
    Watching TV
  • (iii)
    Dancing
  • (iv)
    Listening music
  • (v)
    Helping parents
Question 18
18.
The below graph gives a comparative account of sales(in kg) of various fruits on a certain day. Identify the table for the given line graph.
  • (i)
    Fruit
    bananas
    peaches
    strawberies
    mangoes
    pears
    Sales(in kg)
    63
    45
    36
    18
    27
  • (ii)
    Fruit
    bananas
    peaches
    strawberies
    mangoes
    pears
    Sales(in kg)
    63
    53
    36
    18
    27
  • (iii)
    Fruit
    bananas
    peaches
    strawberies
    mangoes
    pears
    Sales(in kg)
    63
    45
    36
    18
    21
  • (iv)
    Fruit
    bananas
    peaches
    strawberies
    mangoes
    pears
    Sales(in kg)
    63
    45
    30
    18
    27
  • (v)
    Fruit
    bananas
    peaches
    strawberies
    mangoes
    pears
    Sales(in kg)
    63
    45
    36
    12
    27
Question 19
19.
2502 students of a school use different modes of travel to school. Identify the table for the given bar diagram.
  • (i)
    Mode of travel
    School Bus
    RTC Bus
    School Van
    Auto
    Bicycle
    Car
    Moped
    No. of students
    234
    378
    441
    333
    423
    405
    288
  • (ii)
    Mode of travel
    School Bus
    RTC Bus
    School Van
    Auto
    Bicycle
    Car
    Moped
    No. of students
    405
    378
    234
    333
    423
    441
    288
  • (iii)
    Mode of travel
    School Bus
    RTC Bus
    School Van
    Auto
    Bicycle
    Car
    Moped
    No. of students
    288
    423
    234
    378
    333
    441
    405
  • (iv)
    Mode of travel
    School Bus
    RTC Bus
    School Van
    Auto
    Bicycle
    Car
    Moped
    No. of students
    405
    333
    288
    378
    234
    423
    441
  • (v)
    Mode of travel
    School Bus
    RTC Bus
    School Van
    Auto
    Bicycle
    Car
    Moped
    No. of students
    378
    441
    234
    288
    423
    333
    405
Question 20
20.
    • The marks obtained by 12 students in a test are given below. Find their mean marks.
      • 20
      • 36
      • 16
      • 11
      • 34
      • 48
      • 29
      • 21
      • 49
      • 44
      • 12
      • 12
  • (i)
    27
  • (ii)
    137

    5
  • (iii)
    29
  • (iv)
    83

    3
  • (v)
    85

    3
Question 21
21.
A survey of 1680 school students was done to knowthe preferred free time activity. Find the activity that has 150 student preference.
  • (i)
    Community work
  • (ii)
    Helping parents
  • (iii)
    Dancing
  • (iv)
    Listening music
  • (v)
    Reading books
Question 22
22.
There are certain creatures in a zoo. Find the type of creature that has maximum presense in the zoo.
  • (i)
    Reptiles
  • (ii)
    Birds
  • (iii)
    Wild animals
  • (iv)
    Land animals
  • (v)
    Beast animals
Question 23
23.
    • The number of children in 22 families are given below. Identify the frequency distribution table for the given data.
      • 5
      • 5
      • 2
      • 3
      • 0
      • 2
      • 0
      • 0
      • 0
      • 1
      • 0
      • 2
      • 2
      • 3
      • 1
      • 0
      • 2
      • 5
      • 1
      • 4
      • 3
      • 0
  • (i)
    No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    2
    1
    6
    5
    7
    1
  • (ii)
    No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    7
    3
    4
    4
    1
    3
  • (iii)
    No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    7
    3
    5
    3
    1
    3
  • (iv)
    No. of children
    0
    1
    2
    3
    4
    5
    No. of families
    3
    1
    6
    4
    7
    1
Question 24
24.
The total marks obtained by Sunny in his annual exam are 305 as shown below. Find the marks in "Physics".
  • (i)
    88
  • (ii)
    82
  • (iii)
    87
  • (iv)
    83
  • (v)
    85
Question 25
25.
There are 880 creatures in a zoo. Find the type of creature that has 50 creatures presense in the zoo.
  • (i)
    Reptiles
  • (ii)
    Domestic animals
  • (iii)
    Land animals
  • (iv)
    Beast animals
  • (v)
    Water animals
    Assignment Key

  •  1) (ii)
  •  2) (iv)
  •  3) (ii)
  •  4) (iii)
  •  5) (i)
  •  6) (i)
  •  7) (i)
  •  8) (iv)
  •  9) (i)
  •  10) (v)
  •  11) (iv)
  •  12) (iv)
  •  13) (i)
  •  14) (iv)
  •  15) (v)
  •  16) (ii)
  •  17) (i)
  •  18) (i)
  •  19) (v)
  •  20) (iv)
  •  21) (iii)
  •  22) (v)
  •  23) (iii)
  •  24) (v)
  •  25) (iv)