Question

If the median of the following distribution is 14.4, find the missing frequencies.

Answer 1

Step-by-step explanation:

∑f=20

x+y=10−−−−−−−−−−(1)

Median is 14.4

S0, Median class is 12−18

Median =L+

f

2

n

−C

×w ki

So 14.4=12+

5

2

20

−(4+x)

×6

14.4×5=60+(10−4−x)×6

72=60+60−24−6x

6x=120−24−72

6x=120−96

6x=24

x=4

from eq (1)

4+y=10⇒y=6

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