EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Statistics
Grade : ICSE Grade VII
License : Non Commercial Use
Question
1
1.
Ages of 12 students (in years) are given below. Find the mean age.
13
10
11
12
12
13
14
15
13
12
14
14
(i)
55
4
years
(ii)
51
4
years
(iii)
59
4
years
(iv)
13
years
(v)
53
4
years
Question
2
2.
Ages of 30 students are given below. Find the mean.
Age (in years)
10
11
12
13
14
15
No. of students
7
7
1
4
9
2
(i)
367
30
years
(ii)
397
30
years
(iii)
427
30
years
(iv)
184
15
years
(v)
123
10
years
Question
3
3.
Read the given column-graph. Find the month that has maximum rainfall.
(i)
July
(ii)
September
(iii)
June
(iv)
November
(v)
August
Question
4
4.
The total marks obtained by Ramu in his annual exam are 405 as shown below. Find the subject that has minimum score.
(i)
Biology
(ii)
English
(iii)
Mathematics
(iv)
Spanish
(v)
Science
Question
5
5.
There are 760 creatures in a zoo. Find the type of creature that has 140 creatures presense in the zoo.
(i)
Domestic animals
(ii)
Water animals
(iii)
Birds
(iv)
Land animals
(v)
Reptiles
Question
6
6.
Given the bar graph, find the minimum frequency
(i)
40
(ii)
30
(iii)
35
(iv)
25
(v)
20
Question
7
7.
The following table gives the data regarding the favourite sport of 351 students of a school. Find the pie chart sector angle for "wrestling"
Sport
basketball
shotput
football
kabaddi
high jump
wrestling
No. of students
27
81
54
90
36
63
(i)
63.62°
(ii)
66.62°
(iii)
65.62°
(iv)
62.62°
(v)
64.62°
Question
8
8.
The scores obtained by 13 students in a test are given below. Find the range.
16
7
1
1
5
5
7
11
2
14
16
15
16
(i)
15
(ii)
8
12
13
(iii)
7
(iv)
1
(v)
16
Question
9
9.
If the mean of the following frequency distribution is
8
6
29
,
find the value of 'x'.
Value
Frequency
4
4
5
2
6
3
7
3
8
5
9
3
10
x
11
1
12
6
13
1
(i)
2
(ii)
0
(iii)
4
(iv)
-1
(v)
1
Question
10
10.
A survey of 1620 school students was done to know the preferred free time activity. Find the number of students who prefer "Watching TV".
(i)
210
(ii)
209
(iii)
205
(iv)
204
(v)
207
Question
11
11.
Given below is a line graph showing the number of accidents in a city during the given months of a certain year. Identify the table for the given line graph.
(i)
Month
April
October
March
May
January
August
Number of accidents
27
38
48
39
50
32
(ii)
Month
April
October
March
May
January
August
Number of accidents
27
38
48
31
56
32
(iii)
Month
April
October
March
May
January
August
Number of accidents
27
46
48
31
50
32
(iv)
Month
April
October
March
May
January
August
Number of accidents
27
38
40
31
50
32
(v)
Month
April
October
March
May
January
August
Number of accidents
27
38
48
31
50
32
Question
12
12.
The marks obtained by Sunny in his annual exam are shown below. Find the subject that has minimum score.
(i)
Telugu
(ii)
Urdu
(iii)
French
(iv)
Biology
(v)
Hindi
Question
13
13.
There are 1476 creatures in a zoo as shown in the bar graph. Identify the table for the given bar diagram.
(i)
Type of Creatures
Water animals
Beast animals
Wild animals
Domestic animals
Reptiles
Land animals
Birds
No. of Creatures
225
234
99
135
414
207
162
(ii)
Type of Creatures
Water animals
Beast animals
Wild animals
Domestic animals
Reptiles
Land animals
Birds
No. of Creatures
99
225
234
207
135
162
414
(iii)
Type of Creatures
Water animals
Beast animals
Wild animals
Domestic animals
Reptiles
Land animals
Birds
No. of Creatures
225
162
207
99
234
135
414
(iv)
Type of Creatures
Water animals
Beast animals
Wild animals
Domestic animals
Reptiles
Land animals
Birds
No. of Creatures
135
162
234
225
207
414
99
(v)
Type of Creatures
Water animals
Beast animals
Wild animals
Domestic animals
Reptiles
Land animals
Birds
No. of Creatures
162
225
414
99
234
207
135
Question
14
14.
The marks obtained by 11 students in a test are given below. Find the mean of their marks when the marks of each student is doubled.
45
1
13
16
9
30
28
21
44
26
23
(i)
604
13
(ii)
510
11
(iii)
514
11
(iv)
140
3
(v)
512
11
Question
15
15.
The marks obtained by 15 students in a test are given below. Find their mean marks.
20
18
9
37
40
27
37
38
35
30
7
9
1
28
6
(i)
114
5
(ii)
112
5
(iii)
158
7
(iv)
116
5
(v)
70
3
Question
16
16.
160 students of a school use different modes of travel to school. Identify the table for the given line graph.
(i)
Mode of Travel
Auto
Bicycle
Scooter
Moped
School Van
RTC Bus
No. of Students
10
28
40
50
15
25
(ii)
Mode of Travel
Auto
Bicycle
Scooter
Moped
School Van
RTC Bus
No. of Students
10
20
40
50
23
25
(iii)
Mode of Travel
Auto
Bicycle
Scooter
Moped
School Van
RTC Bus
No. of Students
10
20
40
50
15
25
(iv)
Mode of Travel
Auto
Bicycle
Scooter
Moped
School Van
RTC Bus
No. of Students
10
20
40
56
15
25
(v)
Mode of Travel
Auto
Bicycle
Scooter
Moped
School Van
RTC Bus
No. of Students
10
20
48
50
15
25
Question
17
17.
Scores of 30 students are given below. Find the mean.
Score
70
71
74
76
77
80
81
88
89
90
No. of students
1
3
1
4
1
1
2
5
3
9
(i)
2557
30
(ii)
2497
30
(iii)
833
10
(iv)
1249
15
(v)
2527
30
Question
18
18.
The total marks obtained by Rajesh in his annual exam are 345 as shown below. Find the marks in "German".
(i)
72
(ii)
68
(iii)
70
(iv)
73
(v)
67
Question
19
19.
The mean of the below random sample is
22
1
2
.
Find the missing quantity.
10
x
16
19
39
15
14
40
10
20
(i)
40
(ii)
41
(iii)
43
(iv)
44
(v)
42
Question
20
20.
The total export earnings of ₹835 thousand crore of a country during five years is shown below. Find the year that has maximum export earnings.
(i)
2008-09
(ii)
2009-10
(iii)
2006-07
(iv)
2010-11
(v)
2007-08
Question
21
21.
Students of a certain locality use different modes of travel to school as given below. Find the mode of travel that has 324 students.
(i)
Scooter
(ii)
School Van
(iii)
Car
(iv)
Moped
(v)
Auto
Question
22
22.
360 students of a certain locality use different modes of travel to school as shown below. Find the number of students whose mode of travel is "By Foot".
(i)
80
(ii)
82
(iii)
85
(iv)
84
(v)
79
Question
23
23.
Shown below is the total food grain production of 380 million tonnes over 5 years. Find the year that has minimum food grain production.
(i)
2008
(ii)
2011
(iii)
2007
(iv)
2010
(v)
2009
Question
24
24.
Shown below is the total food grain production of 370 million tonnes over 5 years. Find the year that has maximum food grain production.
(i)
2011
(ii)
2010
(iii)
2007
(iv)
2008
(v)
2009
Question
25
25.
Read the column-graph given below. Find the year that has maximum food grains production.
(i)
2007
(ii)
2010
(iii)
2011
(iv)
2009
(v)
2008
Assignment Key
1) (ii)
2) (i)
3) (iv)
4) (i)
5) (i)
6) (iv)
7) (v)
8) (i)
9) (v)
10) (v)
11) (v)
12) (i)
13) (iv)
14) (v)
15) (i)
16) (iii)
17) (ii)
18) (iii)
19) (v)
20) (iii)
21) (iii)
22) (ii)
23) (v)
24) (iv)
25) (ii)