30. The median of the following data is 525. Find the values of x and y if the total
frequency is 100.
Class interval frequency
0 -100 2
100 -200 5
200 -300 X
300 -400 12
400 – 500 17
500 – 600 20
600 – 700 Y
700 – 800 9
800 – 900 7
900 - 1000 4
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Answer:X=9
Y=15
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