EduSahara™ Assignment
Name : Median of Grouped Data
Chapter : Statistics
Grade : CBSE Grade X
License : Non Commercial Use
Question
1
1.
Heights of 20 students are given below. Find the median.
Height (in cm)
126
129
130
134
137
144
149
150
157
169
No. of students
1
1
2
3
3
1
3
2
2
2
(i)
141
cm
(ii)
283
2
cm
(iii)
281
2
cm
(iv)
285
2
cm
Question
2
2.
Heights of 10 plants are given below. Find the median.
Height (in cm)
63
73
84
86
92
95
97
No. of plants
2
1
2
1
1
1
2
(i)
87
cm
(ii)
85
cm
(iii)
84
cm
(iv)
86
cm
(v)
83
cm
Question
3
3.
Ages of 25 students are given below. Find the median.
Age (in years)
10
11
12
13
14
15
No. of students
3
4
2
8
5
3
(i)
14
years
(ii)
15
years
(iii)
13
years
(iv)
12
years
(v)
11
years
Question
4
4.
Scores of 15 students are given below. Find the median.
Score
70
71
73
75
80
87
89
No. of students
3
2
1
1
3
4
1
(i)
81
(ii)
78
(iii)
79
(iv)
82
(v)
80
Question
5
5.
Rainfall of 25 days are given below. Find the median.
Rainfall (in mm)
5
9
10
12
13
14
15
No. of days
9
3
3
2
1
3
4
(i)
10
mm
(ii)
8
mm
(iii)
9
mm
(iv)
12
mm
(v)
11
mm
Question
6
6.
Temperatures of 15 days are given below. Find the median.
Temperature (in degree C)
27
29
30
31
32
34
35
No. of days
1
5
4
2
1
1
1
(i)
32
°C
(ii)
31
°C
(iii)
29
°C
(iv)
28
°C
(v)
30
°C
Question
7
7.
Weights of 15 students are given below. Find the median.
Weight (in kg)
41
45
46
50
51
54
55
57
No. of students
2
1
4
1
2
1
2
2
(i)
50
kg
(ii)
48
kg
(iii)
51
kg
(iv)
52
kg
(v)
49
kg
Question
8
8.
Wages of 30 labourers are given below. Find the median.
Wage (in rupees)
316
337
356
376
402
415
423
429
469
488
No. of labourers
4
5
5
4
3
1
3
3
1
1
(i)
₹
374.00
(ii)
₹
377.00
(iii)
₹
376.00
(iv)
₹
375.00
(v)
₹
378.00
Question
9
9.
The following table shows the weights of
60
persons in a group.
Find the
median weight.
Weight (in kg)
40 - 45
46 - 51
52 - 57
58 - 63
64 - 69
70 - 75
No. of persons
19
10
5
5
16
5
(i)
529
10
kg
(ii)
527
10
kg
(iii)
547
10
kg
(iv)
264
5
kg
(v)
537
10
kg
Question
10
10.
The following table shows the weights of
95
persons in a group.
Find the
median weight.
Weight (in kg)
50 - 60
60 - 70
70 - 80
80 - 90
90 - 100
100 - 110
110 - 120
120 - 130
No. of persons
16
6
5
19
9
18
13
9
(i)
275
3
kg
(ii)
278
3
kg
(iii)
277
3
kg
(iv)
92
kg
(v)
281
3
kg
Question
11
11.
The daily wages of
127
workers in a factory are given below.
Find the
median wage.
Wage (in rupees)
20 - 30
31 - 41
42 - 52
53 - 63
64 - 74
75 - 85
86 - 96
97 - 107
No. of workers
25
15
13
12
9
21
22
10
(i)
₹
62.25
(ii)
₹
64.12
(iii)
₹
62.38
(iv)
₹
63.12
(v)
₹
62.12
Question
12
12.
The daily wages of
67
workers in a factory are given below.
Find the
median wage.
Wage (in rupees)
20 - 29
29 - 38
38 - 47
47 - 56
56 - 65
No. of workers
9
18
29
6
5
(i)
₹
42.02
(ii)
₹
41.02
(iii)
₹
40.05
(iv)
₹
40.02
(v)
₹
40.03
Question
13
13.
A frequency distribution table is given below.
Find the
median .
Class-Interval
9 - 18
19 - 28
29 - 38
39 - 48
49 - 58
Frequency
4
2
16
10
25
(i)
46
(ii)
43
(iii)
47
(iv)
44
(v)
45
Question
14
14.
A frequency distribution table is given below.
Find the
median .
Class-Interval
7 - 17
17 - 27
27 - 37
37 - 47
47 - 57
57 - 67
67 - 77
77 - 87
Frequency
2
5
3
38
33
5
28
3
(i)
553
11
(ii)
563
11
(iii)
574
11
(iv)
552
11
(v)
554
11
Question
15
15.
The following frequency distribution table gives
the monthly consumption of electricity of
131
consumers in a locality.
Find the
median units.
Monthly consumption (in units)
41 - 51
51 - 61
61 - 71
71 - 81
81 - 91
91 - 101
101 - 111
No. of consumers
17
20
23
20
12
20
19
(i)
295
4
units
(ii)
303
4
units
(iii)
297
4
units
(iv)
299
4
units
(v)
74
units
Assignment Key
1) (iii)
2) (ii)
3) (iii)
4) (v)
5) (i)
6) (v)
7) (i)
8) (iii)
9) (ii)
10) (i)
11) (v)
12) (iv)
13) (v)
14) (iv)
15) (i)
