Consider the freq

To find median class,

Assume Σf_i = N = Sum of frequencies,

f_i = frequency

and C_f = cumulative frequency

So, N = 60

⇒ N/2 = 60/2 = 30

The cumulative frequency just greater than (N/2 = ) 30 is 37, so the corresponding median class is 160 - 165.

∴ upper limit of median class = 165

For modal class,

Here, the maximum class frequency is 16.

The class corresponding to this frequency is the modal class. ⇒ modal class = 150 - 155

∴ lower limit of the modal class = 150

Hence, Sum of lower limit of the modal class and upper limit of the median class = 165 + 150 = 315