Q. 194.5( 2 Votes )

# Look at the frequ

Answer :

To find median,

Assume Σfi = N = Sum of frequencies,

h = length of median class,

l = lower boundary of the median class,

f = frequency of median class

and Cf = cumulative frequency

Lets form a table. So, N = 50

N/2 = 50/2 = 25

The cumulative frequency just greater than (N/2 = ) 25 is 40, so the corresponding median class is 55 - 65 and accordingly we get Cf = 20(cumulative frequency before the median class).

Now, since median class is 55 - 65.

l = 55, h = 10, f = 20, N/2 = 25 and Cf = 20

Median is given by,  = 55 + 2.5

= 57.5

Thus, median age is 57.5.

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