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Byju's Answer
Standard X
Mathematics
Finding Median of Grouped Data When Class Intervals Are Not Given
Find the medi...
Question
Find the median for the following frequency table.
Value
12
13
15
19
22
23
Frequency
4
2
4
4
1
5
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Solution
Values are already in ascending order
Total frequency=
20
There are two mid-values
10
t
h
&
11
t
h
i.e,
15
and
19
Median=
15
+
19
2
=
17
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Similar questions
Q.
The mean of the following distribution is
18
. Find the frequency f of the class
19
−
21
.
Class
11
−
13
13
−
15
15
−
17
17
−
19
19
−
21
21
−
23
23
−
25
Frequency
3
6
9
13
f
5
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Q.
The average frequency is
18
. Find the missing frequency
f
.
Class Interval
Frequency
11
−
13
7
13
−
15
6
15
−
17
9
17
−
19
13
19
−
21
f
21
−
23
5
23
−
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4
Q.
Find the mode and median of the following frequency distribution:
x
10
11
12
13
14
15
f
1
4
7
5
9
8
Q.
If the mean of the following frequency distribution is 18 , find the missing frequency .
Class interval : 11-13 13-15 15-17 17-19 19-21 21-23 23-25
Frequency: 3 6 9 13 f 5 4