the median of the following data is 525 find the value of x and y if the sum of allthe frequencies is 100
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answers are x X is equals to 12 and Y is equals to 20
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urvika:
please explain apne cf kese find kiya
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CI Fi CF
0-100 2 2
100-200 5 7
200-300 x 7+x
300-400 12 19+x
400-500 17 36+x
500-600 20 56+x
600-700 y 56+x+y
700-800 9 65+x+y
800-900 7 72+x+y
900-1000 4 76+x+y
N/2 = 100/2 = 50
76+x+y =100
x+y=24.........(1)
Now put the value of finding the Median
Median= l+(n/2-CF)/f *h
525 = 500 +(50-36+x)/20*100
525-500 =(14+x)/20*100
25 = (14+x)5
25/5= 14+x
14-5=x x=9
Now put the value of x in (1),
24-x=y
24-9=y
y=15
Therefore, value of x=9 and y=15.
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