how do u find the lower limit of the modal class?

The following simple example will help to understand quickly,

Examples for Mode of a Grouped Data:

Find the mode of a following grouped data

Class interval (C. I)	10-15	15-20	20-25	25-30	30-35
Frequency (fi)	4	6	8	3	5

Solution:

Here frequency of class interval 20 - 25 is maximum.

So, it is the modal class

Now

l = the lower limit of modal class = 20

f = frequency of modal class = 8

Regards,

Team,

TopperLearning.