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
22
12
32
42
30
15
28
26
24
42
Find the lower quartile.
(i)
12
1
2
(ii)
31
(iii)
27
3
10
(iv)
18
1
2
(v)
30
Question
2
2.
In a class test, the marks obtained by
9
students are
35
11
10
27
39
18
37
50
15
Find the upper quartile.
(i)
26
8
9
(ii)
25
(iii)
38
(iv)
13
(v)
12
1
2
Question
3
3.
In a class test, the marks obtained by
9
students are
47
39
38
44
44
10
44
11
39
Find the inter quartile range.
(i)
9
3
4
(ii)
19
1
2
(iii)
37
(iv)
35
1
9
(v)
24
1
2
Question
4
4.
In a class test, the marks obtained by
11
students are
13
48
24
17
11
44
27
40
21
40
21
Find the semi-inter quartile range.
(i)
11
1
2
(ii)
23
(iii)
40
(iv)
37
(v)
17
Question
5
5.
Heights of 43 students are given below. Find the first quartile.
Height (in cm)
132
136
142
144
145
146
167
No. of students
5
2
8
8
8
6
6
(i)
143
(ii)
141
(iii)
144
(iv)
142
(v)
140
Question
6
6.
Heights of 40 students are given below. Find the third quartile.
Height (in cm)
126
141
142
144
156
165
167
No. of students
4
2
11
5
8
4
6
(i)
158
(ii)
156
(iii)
157
(iv)
155
(v)
154
Question
7
7.
Heights of 26 students are given below. Find the interquartile.
Height (in cm)
125
128
150
154
158
163
165
172
173
174
No. of students
2
1
3
3
1
4
4
1
4
3
(i)
18.5
(ii)
21.5
(iii)
22.5
(iv)
20.5
(v)
19.5
Question
8
8.
In a class test, the marks obtained by
11
students are
11
12
43
11
50
27
30
14
26
50
19
Find the lower quartile.
(i)
31
(ii)
15
1
2
(iii)
26
7
11
(iv)
39
(v)
12
Question
9
9.
In a class test, the marks obtained by
11
students are
21
48
32
31
21
29
10
11
25
25
49
Find the upper quartile.
(i)
39
(ii)
11
(iii)
27
5
11
(iv)
32
(v)
21
Question
10
10.
In a class test, the marks obtained by
8
students are
44
45
38
30
47
23
14
26
Find the inter quartile range.
(i)
10
1
2
(ii)
23
(iii)
21
(iv)
33
3
8
(v)
44
Question
11
11.
In a class test, the marks obtained by
11
students are
35
12
14
15
32
38
37
39
45
35
25
Find the semi-inter quartile range.
(i)
11
1
2
(ii)
23
(iii)
29
8
11
(iv)
15
(v)
33
Question
12
12.
Heights of 29 students are given below. Find the first quartile.
Height (in cm)
133
142
145
147
157
158
161
172
No. of students
5
2
4
2
3
4
2
7
(i)
141.5
(ii)
145.5
(iii)
144.5
(iv)
142.5
(v)
143.5
Question
13
13.
Heights of 47 students are given below. Find the third quartile.
Height (in cm)
126
127
134
141
143
153
156
157
162
168
169
No. of students
6
2
5
4
4
7
2
6
4
4
3
(i)
159
(ii)
158
(iii)
156
(iv)
157
(v)
155
Question
14
14.
Heights of 50 students are given below. Find the interquartile.
Height (in cm)
127
130
133
135
139
144
147
155
157
162
167
No. of students
3
3
4
10
3
6
3
4
2
9
3
(i)
23
(ii)
21
(iii)
22
(iv)
24
(v)
20
Assignment Key
1) (iv)
2) (iii)
3) (ii)
4) (i)
5) (iv)
6) (ii)
7) (iv)
8) (v)
9) (iv)
10) (iii)
11) (i)
12) (v)
13) (iv)
14) (iii)
