EduSahara™ Assignment
Name : Median of Grouped Data
Chapter : Statistics
Grade : CBSE Grade X
License : Non Commercial Use
Question
1
1.
Heights of 15 students are given below. Find the median.
Height (in cm)
125
127
129
142
145
159
161
No. of students
2
5
2
1
1
2
2
(i)
130
cm
(ii)
129
cm
(iii)
127
cm
(iv)
131
cm
(v)
128
cm
Question
2
2.
Heights of 15 plants are given below. Find the median.
Height (in cm)
51
55
59
63
65
90
No. of plants
1
3
4
1
3
3
(i)
59
cm
(ii)
61
cm
(iii)
58
cm
(iv)
60
cm
(v)
57
cm
Question
3
3.
Ages of 10 students are given below. Find the median.
Age (in years)
10
11
12
13
15
No. of students
2
3
1
3
1
(i)
25
2
years
(ii)
12
years
(iii)
27
2
years
(iv)
23
2
years
Question
4
4.
Scores of 30 students are given below. Find the median.
Score
70
71
74
75
77
81
85
86
87
No. of students
1
3
8
3
2
5
4
2
2
(i)
78
(ii)
75
(iii)
74
(iv)
77
(v)
76
Question
5
5.
Rainfall of 30 days are given below. Find the median.
Rainfall (in mm)
5
6
7
8
9
10
11
12
13
14
15
No. of days
4
4
2
2
3
3
3
1
1
5
2
(i)
21
2
mm
(ii)
23
2
mm
(iii)
19
2
mm
(iv)
10
mm
Question
6
6.
Temperatures of 30 days are given below. Find the median.
Temperature (in degree C)
25
26
29
31
32
34
35
No. of days
7
4
1
3
6
5
4
(i)
32
°C
(ii)
65
2
°C
(iii)
67
2
°C
(iv)
63
2
°C
Question
7
7.
Weights of 25 students are given below. Find the median.
Weight (in kg)
41
42
43
44
47
48
55
57
59
No. of students
3
1
2
3
4
4
2
3
3
(i)
47
kg
(ii)
49
kg
(iii)
45
kg
(iv)
48
kg
(v)
46
kg
Question
8
8.
Wages of 25 labourers are given below. Find the median.
Wage (in rupees)
303
324
345
381
382
412
455
459
476
483
No. of labourers
1
4
2
1
5
2
3
1
3
3
(i)
₹
383.00
(ii)
₹
384.00
(iii)
₹
382.00
(iv)
₹
380.00
(v)
₹
381.00
Question
9
9.
The following table shows the weights of
85
persons in a group.
Find the
median weight.
Weight (in kg)
20 - 26
27 - 33
34 - 40
41 - 47
48 - 54
55 - 61
62 - 68
No. of persons
12
5
18
14
13
12
11
(i)
185
4
kg
(ii)
179
4
kg
(iii)
181
4
kg
(iv)
89
2
kg
(v)
177
4
kg
Question
10
10.
The following table shows the weights of
89
persons in a group.
Find the
median weight.
Weight (in kg)
20 - 28
28 - 36
36 - 44
44 - 52
52 - 60
60 - 68
68 - 76
No. of persons
20
13
11
16
8
16
5
(i)
177
4
kg
(ii)
181
4
kg
(iii)
89
2
kg
(iv)
179
4
kg
(v)
185
4
kg
Question
11
11.
The daily wages of
82
workers in a factory are given below.
Find the
median wage.
Wage (in rupees)
30 - 36
37 - 43
44 - 50
51 - 57
58 - 64
65 - 71
No. of workers
7
10
10
16
19
20
(i)
₹
56.88
(ii)
₹
56.75
(iii)
₹
56.62
(iv)
₹
58.62
(v)
₹
57.62
Question
12
12.
The daily wages of
84
workers in a factory are given below.
Find the
median wage.
Wage (in rupees)
30 - 38
38 - 46
46 - 54
54 - 62
62 - 70
No. of workers
16
8
27
24
9
(i)
₹
51.67
(ii)
₹
51.33
(iii)
₹
52.00
(iv)
₹
53.33
(v)
₹
52.33
Question
13
13.
A frequency distribution table is given below.
Find the
median .
Class-Interval
6 - 16
17 - 27
28 - 38
39 - 49
50 - 60
61 - 71
Frequency
40
26
10
29
27
4
(i)
307
10
(ii)
149
5
(iii)
317
10
(iv)
297
10
(v)
299
10
Question
14
14.
A frequency distribution table is given below.
Find the
median .
Class-Interval
12 - 17
17 - 22
22 - 27
27 - 32
32 - 37
Frequency
8
37
41
35
35
(i)
1068
41
(ii)
1108
41
(iii)
1149
41
(iv)
1067
41
(v)
1069
41
Question
15
15.
The following frequency distribution table gives
the monthly consumption of electricity of
119
consumers in a locality.
Find the
median units.
Monthly consumption (in units)
57 - 77
77 - 97
97 - 117
117 - 137
137 - 157
157 - 177
177 - 197
No. of consumers
12
18
25
7
24
19
14
(i)
909
7
units
(ii)
911
7
units
(iii)
923
7
units
(iv)
130
units
(v)
916
7
units
Assignment Key
1) (ii)
2) (i)
3) (iv)
4) (v)
5) (iii)
6) (iv)
7) (i)
8) (iii)
9) (v)
10) (i)
11) (iii)
12) (ii)
13) (iv)
14) (iv)
15) (i)
