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Marks of 40 student in a test out of max...

Marks of 40 student in a test out of maximum 50 marks are as follow :

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To find the median, it is necessary to arrange the dat in ascending or desecending order of their magnitude. So, on arranging the data in ascending order, we get the following table :

Here N-40, which is even
`:. "Median"=((N)/(2)th "value"+((N)/(2)+1)the "value")/((40)/()th "value"+((40)/(2)+1)th "value")`
`=(20th "value" +21st "value")/(2)=(25+30)/(2)=27.5`
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