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
50
11
19
32
38
35
28
35
20
Find the lower quartile.
(i)
17
(ii)
36
1
2
(iii)
29
7
9
(iv)
19
1
2
(v)
39
Question
2
2.
In a class test, the marks obtained by
8
students are
19
10
25
50
32
23
34
50
Find the upper quartile.
(i)
34
(ii)
30
3
8
(iii)
40
(iv)
15
(v)
19
Question
3
3.
In a class test, the marks obtained by
11
students are
44
47
24
38
26
22
39
11
14
30
24
Find the inter quartile range.
(i)
39
(ii)
22
(iii)
8
1
2
(iv)
29
(v)
17
Question
4
4.
In a class test, the marks obtained by
9
students are
19
45
48
36
21
45
27
27
17
Find the semi-inter quartile range.
(i)
31
(ii)
20
(iii)
45
(iv)
12
1
2
(v)
31
2
3
Question
5
5.
Heights of 43 students are given below. Find the first quartile.
Height (in cm)
127
134
152
163
170
171
174
175
No. of students
2
5
9
5
6
6
5
5
(i)
151
(ii)
150
(iii)
152
(iv)
154
(v)
153
Question
6
6.
Heights of 50 students are given below. Find the third quartile.
Height (in cm)
125
127
134
147
148
150
162
163
164
172
175
No. of students
8
6
5
3
4
4
4
9
2
2
3
(i)
161
(ii)
164
(iii)
163
(iv)
165
(v)
162
Question
7
7.
Heights of 45 students are given below. Find the interquartile.
Height (in cm)
140
143
156
160
161
168
169
No. of students
4
11
9
4
6
4
7
(i)
22.5
(ii)
19.5
(iii)
23.5
(iv)
21.5
(v)
20.5
Question
8
8.
In a class test, the marks obtained by
10
students are
50
45
49
22
33
23
13
46
50
18
Find the lower quartile.
(i)
20
(ii)
13
3
4
(iii)
34
9
10
(iv)
27
1
2
(v)
47
1
2
Question
9
9.
In a class test, the marks obtained by
10
students are
44
33
38
47
34
11
20
25
12
38
Find the upper quartile.
(i)
30
1
5
(ii)
16
(iii)
11
(iv)
36
(v)
38
Question
10
10.
In a class test, the marks obtained by
9
students are
36
29
17
28
46
14
48
36
11
Find the inter quartile range.
(i)
37
(ii)
29
4
9
(iii)
12
3
4
(iv)
41
(v)
25
1
2
Question
11
11.
In a class test, the marks obtained by
10
students are
21
12
27
49
47
49
41
31
25
40
Find the semi-inter quartile range.
(i)
23
(ii)
21
(iii)
37
(iv)
34
1
5
(v)
10
1
2
Question
12
12.
Heights of 36 students are given below. Find the first quartile.
Height (in cm)
126
131
139
142
144
152
153
157
164
167
174
No. of students
2
4
3
2
2
3
2
6
7
4
1
(i)
138
(ii)
141
(iii)
139
(iv)
140
(v)
137
Question
13
13.
Heights of 25 students are given below. Find the third quartile.
Height (in cm)
125
131
135
136
143
145
155
167
171
172
No. of students
3
2
1
3
2
2
3
3
1
5
(i)
168
(ii)
167
(iii)
171
(iv)
170
(v)
169
Question
14
14.
Heights of 32 students are given below. Find the interquartile.
Height (in cm)
131
135
138
139
147
151
153
159
169
170
171
173
No. of students
3
2
1
3
2
2
3
3
3
4
5
1
(i)
31
(ii)
30
(iii)
32
(iv)
29
(v)
33
Assignment Key
1) (iv)
2) (i)
3) (v)
4) (iv)
5) (iii)
6) (iii)
7) (iv)
8) (i)
9) (v)
10) (v)
11) (v)
12) (iii)
13) (v)
14) (i)
