Locate the median graphically from the following data :
`{:("Marks",0-10,10-20,20-30,30-40,40-50),("Number of Students"," "10," " 20," " 30," " 20," " 10):}`

Explanation

Firstly we convert the given distribution into less and more than ' cumulative frequencies distribution .

Method I : Using the less than ogive and more than ogive method , the median is computed graphicallya as follows :

It is clear from the above figure that less than ogive curve and more than ogive curve meet each other at point E. The value of median is 25.
Median 25.