Find the median for the following frequency distribution :
Class
4-8
8-12
12-16
16-20
20-24
24-28
Frequency
9
16
12
7
15
1
Answers
Answered by
9
n/2 = 30 ,
f = 12 ,
cf = 25 ,
h = 12 - 8 = 4
l = 12
median = l + [ ( n/2 - cf )/f ] × h
= 12 + [ ( 30 - 25 )/12 ] × 4
= 12 + 20/12
= 12 + 1.67
= 13.67
Therefore ,
median = 13.67
I hope this helps you.
: )
f = 12 ,
cf = 25 ,
h = 12 - 8 = 4
l = 12
median = l + [ ( n/2 - cf )/f ] × h
= 12 + [ ( 30 - 25 )/12 ] × 4
= 12 + 20/12
= 12 + 1.67
= 13.67
Therefore ,
median = 13.67
I hope this helps you.
: )
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