EduSahara™ Assignment
Name : Quartiles
Chapter : Median, Quartiles and Mode
Grade : ICSE Grade X
License : Non Commercial Use
Question
1
1.
In a class test, the marks obtained by
9
students are
21
14
10
11
34
44
25
28
28
Find the lower quartile.
(i)
31
(ii)
12
1
2
(iii)
23
8
9
(iv)
18
1
2
(v)
34
Question
2
2.
In a class test, the marks obtained by
9
students are
20
39
34
31
15
14
21
46
43
Find the upper quartile.
(i)
17
1
2
(ii)
29
2
9
(iii)
41
(iv)
32
(v)
23
1
2
Question
3
3.
In a class test, the marks obtained by
12
students are
31
49
38
21
12
23
13
23
34
25
40
14
Find the inter quartile range.
(i)
34
(ii)
37
(iii)
20
(iv)
26
11
12
(v)
14
Question
4
4.
In a class test, the marks obtained by
11
students are
27
31
26
17
44
18
23
24
50
17
25
Find the semi-inter quartile range.
(i)
33
(ii)
6
1
2
(iii)
18
(iv)
27
5
11
(v)
13
Question
5
5.
Heights of 48 students are given below. Find the first quartile.
Height (in cm)
126
131
133
135
139
141
147
171
No. of students
3
5
6
4
7
10
6
7
(i)
133
(ii)
134
(iii)
131
(iv)
132
(v)
135
Question
6
6.
Heights of 48 students are given below. Find the third quartile.
Height (in cm)
126
140
142
143
145
148
157
158
159
162
174
No. of students
5
4
5
2
7
3
4
4
5
7
2
(i)
158
(ii)
157
(iii)
160
(iv)
159
(v)
161
Question
7
7.
Heights of 43 students are given below. Find the interquartile.
Height (in cm)
126
136
137
142
153
156
159
160
163
164
No. of students
3
2
7
7
5
4
1
4
3
7
(i)
21
(ii)
23
(iii)
24
(iv)
22
(v)
25
Question
8
8.
In a class test, the marks obtained by
11
students are
37
48
35
50
34
50
31
38
28
45
18
Find the lower quartile.
(i)
32
(ii)
37
7
11
(iii)
17
(iv)
31
(v)
8
1
2
Question
9
9.
In a class test, the marks obtained by
11
students are
20
41
50
29
19
46
24
42
35
15
13
Find the upper quartile.
(i)
11
1
2
(ii)
30
4
11
(iii)
37
(iv)
23
(v)
42
Question
10
10.
In a class test, the marks obtained by
8
students are
25
24
21
14
30
33
38
18
Find the inter quartile range.
(i)
12
(ii)
6
(iii)
24
(iv)
30
(v)
18
Question
11
11.
In a class test, the marks obtained by
8
students are
47
14
16
20
11
34
31
16
Find the semi-inter quartile range.
(i)
14
(ii)
8
1
2
(iii)
23
5
8
(iv)
17
(v)
36
Question
12
12.
Heights of 46 students are given below. Find the first quartile.
Height (in cm)
131
133
142
143
144
145
156
160
No. of students
6
9
4
7
6
3
4
7
(i)
132
(ii)
134
(iii)
135
(iv)
133
(v)
131
Question
13
13.
Heights of 30 students are given below. Find the third quartile.
Height (in cm)
129
142
144
145
151
159
164
172
175
No. of students
2
6
4
1
2
2
3
7
3
(i)
170
(ii)
171
(iii)
172
(iv)
174
(v)
173
Question
14
14.
Heights of 45 students are given below. Find the interquartile.
Height (in cm)
126
127
128
141
147
157
166
168
169
171
No. of students
3
3
7
5
4
8
3
5
3
4
(i)
38
(ii)
41
(iii)
39
(iv)
42
(v)
40
Assignment Key
1) (ii)
2) (iii)
3) (iii)
4) (ii)
5) (i)
6) (iv)
7) (ii)
8) (iv)
9) (v)
10) (i)
11) (ii)
12) (iv)
13) (iii)
14) (v)
