Class Interval | Frequency |
0-5 5-10 10-15 15-20 20-25 25-30 30-35 35-40 | 7 10 x 13 y 10 14 9 |
Answer:
We have median
It lies in the class interval 20-25, so 20-25 is the
median class
Median
Given
Solving (1) and (2) we get
x = 17, y = 20
C.I
Frequency
Cumulative
frequency
0-5
5-10
10-15
15-20
20-25
25-30
35-40
7
10
x
13
y
14
9
7
17
17 + x
30 + x
30 + x + y
54 + x + y
63 + x + y
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