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
10
students are
36
37
48
20
33
32
40
50
48
43
Find the lower quartile.
(i)
6
1
2
(ii)
38
7
10
(iii)
13
(iv)
32
1
2
(v)
30
Question
2
2.
In a class test, the marks obtained by
11
students are
30
48
49
50
44
45
41
25
44
25
37
Find the upper quartile.
(i)
9
(ii)
25
(iii)
18
(iv)
48
(v)
30
Question
3
3.
In a class test, the marks obtained by
10
students are
32
34
41
26
21
40
19
38
37
41
Find the inter quartile range.
(i)
39
(ii)
7
3
4
(iii)
15
1
2
(iv)
23
1
2
(v)
22
Question
4
4.
In a class test, the marks obtained by
9
students are
35
12
24
22
45
44
40
29
10
Find the semi-inter quartile range.
(i)
25
(ii)
35
(iii)
12
1
2
(iv)
17
(v)
42
Question
5
5.
Heights of 44 students are given below. Find the first quartile.
Height (in cm)
139
140
145
151
152
154
155
164
173
174
175
No. of students
4
4
2
2
2
4
4
6
5
5
6
(i)
153
(ii)
150
(iii)
149
(iv)
152
(v)
151
Question
6
6.
Heights of 39 students are given below. Find the third quartile.
Height (in cm)
130
131
133
134
139
149
159
162
166
No. of students
7
4
4
5
6
1
2
3
7
(i)
164
(ii)
162
(iii)
160
(iv)
163
(v)
161
Question
7
7.
Heights of 28 students are given below. Find the interquartile.
Height (in cm)
130
133
134
137
143
144
147
149
153
155
159
167
No. of students
2
3
3
2
1
1
4
2
3
3
2
2
(i)
17
(ii)
21
(iii)
20
(iv)
19
(v)
18
Question
8
8.
In a class test, the marks obtained by
9
students are
40
21
24
24
19
14
50
34
42
Find the lower quartile.
(i)
29
7
9
(ii)
36
(iii)
21
(iv)
10
1
2
(v)
20
Question
9
9.
In a class test, the marks obtained by
9
students are
12
19
23
22
45
22
16
31
40
Find the upper quartile.
(i)
35
1
2
(ii)
17
1
2
(iii)
33
(iv)
9
(v)
18
Question
10
10.
In a class test, the marks obtained by
11
students are
35
43
49
35
31
43
39
43
10
42
47
Find the inter quartile range.
(i)
8
(ii)
4
(iii)
35
(iv)
39
(v)
43
Question
11
11.
In a class test, the marks obtained by
8
students are
39
25
46
21
25
47
39
48
Find the semi-inter quartile range.
(i)
46
(ii)
10
1
2
(iii)
21
(iv)
25
(v)
36
1
4
Question
12
12.
Heights of 30 students are given below. Find the first quartile.
Height (in cm)
131
144
145
149
152
155
159
163
169
172
174
No. of students
1
4
4
4
2
4
3
2
1
1
4
(i)
146
(ii)
147
(iii)
145
(iv)
144
(v)
143
Question
13
13.
Heights of 46 students are given below. Find the third quartile.
Height (in cm)
126
132
140
142
160
165
172
174
175
No. of students
3
4
6
4
5
5
7
8
4
(i)
174
(ii)
172
(iii)
173
(iv)
171
(v)
175
Question
14
14.
Heights of 33 students are given below. Find the interquartile.
Height (in cm)
128
132
142
147
151
156
163
165
170
No. of students
3
4
5
3
4
6
4
2
2
(i)
19.5
(ii)
15.5
(iii)
18.5
(iv)
17.5
(v)
16.5
Assignment Key
1) (iv)
2) (iv)
3) (iii)
4) (iii)
5) (v)
6) (ii)
7) (iv)
8) (v)
9) (i)
10) (i)
11) (ii)
12) (iii)
13) (iii)
14) (iv)
