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)