2 points
Q.8) The following table shows
ages of 300 patients getting
medical treatment in a hospital on
a perticular day. Find the median
age.
Tlapan 2
12
5
and En
O
37.37 years
O 38.73 years
O 39.73 years
0 40.39 years
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Answered by
2
Answer:
onsider the following table, to calculate median:
c
i
f
i
cf
10-20 60 60
20-30 42 60+42=102
30-40 55 102+55=157
40-50 70 157+70=227
50-60 53 227+53=280
60-70 20 280+20=300
Median =l+
f
m
(
2
N
−cf)
×c
Here,
Class Interval c=10
N=Σf
i
=300
2
N
=150
⇒ Median class =30−40
⇒Frequency of median classf
m
=55
Lower boundary of median class l=30
previous cumulative frequency of median class cf=102
∴ Median =30+
55
(
2
300
−102)
×10
∴ Median =30+
55
(48)
×10
∴ Median =38.727⇒38.73
Hence. option B is correct.
Step-by-step explanation:
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