EduSahara™ Assignment
Name : Arithmetic Mean
Chapter : Data Handling
Grade : CBSE Grade VII
License : Non Commercial Use
Question
1
1.
The scores obtained by 6 students in a test are given below. Find the mean score.
8
9
15
4
16
14
(i)
11
1
2
(ii)
16
(iii)
12
(iv)
11
(v)
4
Question
2
2.
Rainfall of 14 days (in mm) are given below. Find the mean rainfall.
5
8
9
11
10
7
13
13
9
7
7
14
15
8
(i)
75
7
mm
(ii)
68
7
mm
(iii)
10
mm
(iv)
82
7
mm
(v)
69
7
mm
Question
3
3.
Scores of 12 students are given below. Find the mean score.
87
88
88
75
86
74
79
79
76
90
83
85
(i)
83
(ii)
169
2
(iii)
167
2
(iv)
165
2
Question
4
4.
Temperatures of 14 days (in °C) are given below. Find the mean temperature.
26
35
28
29
32
30
25
29
30
30
32
32
25
31
(i)
221
7
°C
(ii)
214
7
°C
(iii)
207
7
°C
(iv)
208
7
°C
(v)
209
7
°C
Question
5
5.
Weights of 14 students (in kg) are given below. Find the mean weight.
49
54
50
48
60
42
44
56
59
51
40
44
45
42
(i)
356
7
kg
(ii)
349
7
kg
(iii)
344
7
kg
(iv)
49
kg
(v)
342
7
kg
Question
6
6.
Daily wages of 15 labourers (in ₹) are given below. Find the mean wage.
310
421
467
435
394
336
378
435
455
330
387
393
417
361
465
(i)
₹
400.93
(ii)
₹
399.93
(iii)
₹
399.00
(iv)
₹
399.07
(v)
₹
398.93
Question
7
7.
Find the mean of all prime numbers between 20 and 100.
(i)
985
17
(ii)
981
17
(iii)
1097
19
(iv)
983
17
(v)
869
15
Question
8
8.
Find the mean of all prime numbers between 30 and 80.
(i)
329
6
(ii)
441
8
(iii)
221
4
(iv)
331
6
(v)
111
2
Question
9
9.
Find the mean of first 8 multiples of 20.
(i)
89
(ii)
93
(iii)
91
(iv)
87
(v)
90
Question
10
10.
Find the mean of first 10 whole numbers.
(i)
11
2
(ii)
5
(iii)
17
4
(iv)
9
2
(v)
7
2
Question
11
11.
Find the mean of first 5 multiples of 11.
(i)
32
(ii)
33
(iii)
30
(iv)
35
(v)
34
Question
12
12.
Find the mean of the first 15 odd numbers.
(i)
16
(ii)
13
(iii)
17
(iv)
15
(v)
14
Question
13
13.
Find the mean of the first 15 even numbers.
(i)
15
(ii)
16
(iii)
17
(iv)
14
(v)
19
Question
14
14.
The marks obtained by 12 students in a test are given below. Find their mean marks.
12
23
4
46
2
18
41
41
7
29
38
34
(i)
295
12
(ii)
293
12
(iii)
99
4
(iv)
49
2
(v)
247
10
Question
15
15.
Heights of 11 students (in cm) are given below. Find the mean height.
174
143
134
168
175
145
133
150
148
154
152
(i)
1676
11
cm
(ii)
1687
11
cm
(iii)
1678
11
cm
(iv)
1677
11
cm
(v)
1698
11
cm
Question
16
16.
Heights of 14 plants (in cm) are given below. Find the mean height.
89
85
89
92
90
86
93
87
93
61
60
57
94
98
(i)
601
7
cm
(ii)
84
cm
(iii)
594
7
cm
(iv)
589
7
cm
(v)
587
7
cm
Question
17
17.
Ages of 14 students (in years) are given below. Find the mean age.
14
13
11
10
15
11
13
13
11
14
12
10
10
13
(i)
99
7
years
(ii)
92
7
years
(iii)
87
7
years
(iv)
86
7
years
(v)
85
7
years
Assignment Key
1) (iv)
2) (ii)
3) (iv)
4) (iii)
5) (v)
6) (v)
7) (iv)
8) (iv)
9) (v)
10) (iv)
11) (ii)
12) (iv)
13) (ii)
14) (i)
15) (i)
16) (v)
17) (v)
