EduSahara™ Assignment
Name : Median of Raw Data
Chapter : Statistics
Grade : CBSE Grade IX
License : Non Commercial Use
Question
1
1.
Find the median of all prime numbers between 50 and 70.
(i)
59
(ii)
61
(iii)
60
(iv)
62
(v)
57
Question
2
2.
Find the median of all the factors of 20.
(i)
9
2
(ii)
11
2
(iii)
7
2
(iv)
17
4
(v)
5
Question
3
3.
Find the median of first 9 whole numbers.
(i)
4
(ii)
3
(iii)
2
(iv)
5
(v)
7
Question
4
4.
Find the median of all the factors of 40.
(i)
7
(ii)
15
2
(iii)
11
2
(iv)
13
2
(v)
25
4
Question
5
5.
Find the median of the first 10 odd numbers.
(i)
10
(ii)
8
(iii)
9
(iv)
12
(v)
11
Question
6
6.
Find the median of the first 20 even numbers.
(i)
18
(ii)
20
(iii)
21
(iv)
22
(v)
24
Question
7
7.
The marks obtained by 11 students in a test are given below. Find their median marks.
49
9
7
1
6
20
13
24
32
40
17
(i)
14
(ii)
17
(iii)
16
(iv)
18
(v)
20
Question
8
8.
Heights of 11 students (in cm) are given below. Find the median height.
142
127
158
163
144
136
165
157
127
164
126
(i)
146
cm
(ii)
143
cm
(iii)
145
cm
(iv)
142
cm
(v)
144
cm
Question
9
9.
Heights of 10 plants (in cm) are given below. Find the median height.
81
80
63
86
93
73
98
70
91
79
(i)
161
2
cm
(ii)
165
2
cm
(iii)
81
cm
(iv)
163
2
cm
Question
10
10.
Ages of 14 students (in years) are given below. Find the median age.
12
12
15
10
11
11
11
11
15
14
11
15
11
14
(i)
25
2
years
(ii)
12
years
(iii)
27
2
years
(iv)
23
2
years
Question
11
11.
Rainfall of 12 days (in mm) are given below. Find the median rainfall.
15
7
13
11
5
5
9
10
7
15
14
10
(i)
9
mm
(ii)
8
mm
(iii)
12
mm
(iv)
11
mm
(v)
10
mm
Question
12
12.
Scores of 12 students are given below. Find the median score.
89
77
82
78
76
85
79
84
73
87
78
75
(i)
79
(ii)
159
2
(iii)
157
2
(iv)
161
2
Question
13
13.
Temperatures of 10 days (in °C) are given below. Find the median temperature.
30
32
35
34
26
26
31
25
27
31
(i)
63
2
°C
(ii)
31
°C
(iii)
61
2
°C
(iv)
65
2
°C
Question
14
14.
Weights of 10 students (in kg) are given below. Find the median weight.
46
51
53
50
53
43
58
54
41
41
(i)
51
kg
(ii)
103
2
kg
(iii)
105
2
kg
(iv)
101
2
kg
Question
15
15.
Daily wages of 12 labourers (in ₹) are given below. Find the median wage.
319
306
402
405
364
399
495
314
415
465
431
374
(i)
₹
401.00
(ii)
₹
401.50
(iii)
₹
402.50
(iv)
₹
400.50
Question
16
16.
Given an even number of random samples with the middle two samples as
x +
22
and x +
33
and the median as
36
1
2
,
find the value of x.
(i)
8
(ii)
10
(iii)
6
(iv)
11
(v)
9
Question
17
17.
The scores obtained by 7 students in a test are given below. Find the median.
15
20
4
2
10
12
10
(i)
20
(ii)
10
3
7
(iii)
10
(iv)
18
(v)
2
Question
18
18.
The observations of an ungrouped data are
x
1
,
x
2
,
2x
1
and
x
1
<
x
2
<
2x
1
.
If the mean and median of the data are equal to
9
,
find the observations of the data
(i)
6
,
9
,
12
(ii)
7
,
9
,
14
(iii)
10
,
9
,
16
(iv)
12
,
9
,
24
Question
19
19.
The observations of an ungrouped data are
x
1
,
x
2
,
x
3
and
x
1
<
x
2
<
x
3
.
If the mean and median of the data are
48
and
32
respectively and
x
3
-
x
1
=
80
,
find
x
1
,
x
2
,
x
3
(i)
16
,
32
,
96
(ii)
18
,
32
,
98
(iii)
20
,
32
,
100
(iv)
32
,
32
,
192
Assignment Key
1) (iii)
2) (i)
3) (i)
4) (iv)
5) (i)
6) (iii)
7) (ii)
8) (v)
9) (i)
10) (iv)
11) (v)
12) (iii)
13) (iii)
14) (iv)
15) (iv)
16) (v)
17) (iii)
18) (i)
19) (i)
