Following is the

To find: The median I.Q.

Formula Used:

Median = l + × h

l = lower limit of median class

f = frequency of median class

h = size of the median class

F = cumulative frequency preceding the median class.

Explanation:

We have, N = 100

= 50

The cumulative frequency just greater than is 67 then the median class 94.5-104.5 such that,

l = 94.5, f = 33, F = 34, h = 104.5 – 94.5 = 10

= 94.5 + 4.85

= 99.35