Question

If the median of 60 obser ?
-vation given below is 28. 5, find the
Value of x and Y
CI.0-10/10-20/20-30/30-40/40-50/50-60
F. 5 x 20 15 y 5​

Answer 1

Answer:

x =8 ,y =7

Step-by-step explanation:

M =28.5 N = 45+x+y

60 = 45+x+y .....(1)

x+y = 60-45

x+y = 15 .....(2)

y = 15-x .....(3)

M =N/2

= 60/2

=30

our median lies in 20-30 , so our lower limit will be 20

M=L+n/2-cf*i

f

28.5=20+30-(5+x)*10

20

28.5-20 =30-5-x

10. 20

0.85*20 = 25-x

17 = 25-x

x = 25-17

x = 8

putting the value of x in (3)

y = 15-8

y = 7

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