Median of the data 7, 10, 15, x, y, 27, 30 is 17 after adding one observation 50 to the data, median of new list is 18, then find the values of x' and 'y'.
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Fourth term of the data is x and the median of the data is 17. Therefore the value of x is 17. Now the median of the data is 18 and the value of x is 17. Therefore, the value of x is 17 and the value of y is 19
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