Q. 105.0( 1 Vote )

# The maximum bowli

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 = 30

N/2 = 30/2 = 15

The cumulative frequency just greater than (N/2 = ) 15 is 21, so the corresponding median class is 115 - 130 and accordingly we get Cf = 14(cumulative frequency before the median class).

Now, since median class is 115 - 130.

l = 115, h = 15, f = 7, N/2 = 15 and Cf = 14

Median is given by,

= 115 + 2.14

= 117.14

Thus, median is 117.14 km/hr.

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