Answer :


We have, N = 140


= = 70


The cumulative frequency is just greater than 98 then median class is 55-65 such that


l = 55, f = 40, F = 58, h = 65 – 55 = 10


Median = l + * h


= 55 + * 10


= 55 + * 10


= 55 + 3 = 58


Therefore, Median = 58


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