The following observations have been arranged in ascending order. If the median of the data is 78, find the value of x. 44,47,63,65,x+13,87,93,99,110.
A
65
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B
68
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C
66
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D
64
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Solution
The correct option is A65 The series in ascending order is: 44,47,63,65,x+13,87,93,99,110. The series has 9 observations. hence, the middle observation will be the median of the series. Here, x+13 is the middle observation Therefore, x+13=78 ⇒x=65