EduSahara™ Assignment
Name : Median of Grouped Data
Chapter : Statistics
Grade : CBSE Grade X
License : Non Commercial Use
Question
1
1.
Heights of 30 students are given below. Find the median.
Height (in cm)
133
136
143
145
161
164
175
No. of students
3
3
3
9
3
4
5
(i)
143
cm
(ii)
147
cm
(iii)
145
cm
(iv)
144
cm
(v)
146
cm
Question
2
2.
Heights of 10 plants are given below. Find the median.
Height (in cm)
54
57
59
63
78
79
82
No. of plants
3
1
1
1
1
2
1
(i)
59
cm
(ii)
63
cm
(iii)
62
cm
(iv)
60
cm
(v)
61
cm
Question
3
3.
Ages of 20 students are given below. Find the median.
Age (in years)
10
11
12
13
14
15
No. of students
3
2
5
3
3
4
(i)
25
2
years
(ii)
29
2
years
(iii)
13
years
(iv)
27
2
years
Question
4
4.
Scores of 10 students are given below. Find the median.
Score
72
74
77
83
84
85
88
90
No. of students
1
1
2
1
2
1
1
1
(i)
167
2
(ii)
169
2
(iii)
171
2
(iv)
84
Question
5
5.
Rainfall of 10 days are given below. Find the median.
Rainfall (in mm)
8
9
11
12
13
14
No. of days
1
2
2
1
2
2
(i)
27
2
mm
(ii)
23
2
mm
(iii)
12
mm
(iv)
25
2
mm
Question
6
6.
Temperatures of 10 days are given below. Find the median.
Temperature (in degree C)
26
27
28
29
31
32
34
No. of days
1
1
2
2
1
1
2
(i)
31
°C
(ii)
27
°C
(iii)
28
°C
(iv)
30
°C
(v)
29
°C
Question
7
7.
Weights of 30 students are given below. Find the median.
Weight (in kg)
40
42
43
44
45
52
55
57
58
60
No. of students
1
3
2
4
3
4
4
6
1
2
(i)
54
kg
(ii)
50
kg
(iii)
53
kg
(iv)
52
kg
(v)
51
kg
Question
8
8.
Wages of 20 labourers are given below. Find the median.
Wage (in rupees)
309
338
384
399
427
457
481
488
No. of labourers
2
3
5
4
1
1
1
3
(i)
₹
393.50
(ii)
₹
392.50
(iii)
₹
391.50
(iv)
₹
392.00
Question
9
9.
The following table shows the weights of
92
persons in a group.
Find the
median weight.
Weight (in kg)
30 - 35
36 - 41
42 - 47
48 - 53
54 - 59
60 - 65
66 - 71
72 - 77
No. of persons
7
18
10
17
8
6
11
15
(i)
874
17
kg
(ii)
1749
34
kg
(iii)
1815
34
kg
(iv)
1747
34
kg
(v)
1781
34
kg
Question
10
10.
The following table shows the weights of
93
persons in a group.
Find the
median weight.
Weight (in kg)
20 - 27
27 - 34
34 - 41
41 - 48
48 - 55
55 - 62
62 - 69
No. of persons
17
14
15
12
12
11
12
(i)
124
3
kg
(ii)
331
8
kg
(iii)
991
24
kg
(iv)
1039
24
kg
(v)
1015
24
kg
Question
11
11.
The daily wages of
123
workers in a factory are given below.
Find the
median wage.
Wage (in rupees)
30 - 37
38 - 45
46 - 53
54 - 61
62 - 69
70 - 77
No. of workers
20
28
20
20
7
28
(i)
₹
51.10
(ii)
₹
51.00
(iii)
₹
52.90
(iv)
₹
51.90
(v)
₹
50.90
Question
12
12.
The daily wages of
102
workers in a factory are given below.
Find the
median wage.
Wage (in rupees)
20 - 28
28 - 36
36 - 44
44 - 52
52 - 60
60 - 68
No. of workers
16
14
22
11
20
19
(i)
₹
45.64
(ii)
₹
43.82
(iii)
₹
44.64
(iv)
₹
43.64
(v)
₹
43.73
Question
13
13.
A frequency distribution table is given below.
Find the
median .
Class-Interval
18 - 28
29 - 39
40 - 50
51 - 61
62 - 72
73 - 83
Frequency
8
11
44
24
18
14
(i)
399
8
(ii)
413
8
(iii)
405
8
(iv)
397
8
(v)
199
4
Question
14
14.
A frequency distribution table is given below.
Find the
median .
Class-Interval
2 - 11
11 - 20
20 - 29
29 - 38
38 - 47
Frequency
29
33
41
28
15
(i)
919
41
(ii)
921
41
(iii)
960
41
(iv)
920
41
(v)
1001
41
Question
15
15.
The following frequency distribution table gives
the monthly consumption of electricity of
77
consumers in a locality.
Find the
median units.
Monthly consumption (in units)
58 - 78
78 - 98
98 - 118
118 - 138
138 - 158
No. of consumers
23
10
16
10
18
(i)
105
units
(ii)
855
8
units
(iii)
839
8
units
(iv)
847
8
units
(v)
841
8
units
Assignment Key
1) (iii)
2) (v)
3) (i)
4) (i)
5) (ii)
6) (v)
7) (iv)
8) (iii)
9) (iv)
10) (iii)
11) (v)
12) (iv)
13) (iv)
14) (i)
15) (iii)
