Answer :

The frequency distribution table for ‘less than’ type is:

Lets plot a graph of ‘less than ogive’, taking upper limits of the class intervals on x - axis and cumulative frequencies on y - axis.



As we have N = 53 by the frequency table.


N/2 = 53/2 = 26.5


Mark 26.5 on y - axis and the corresponding point on x - axis would be the median.



The corresponding point on x - axis is 66.4.


Hence, median is 66.4


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