Question

The lower limit of the modal class of the following data is:

C.I.	Frequency
0-10	5
10-20	8
20-30	13
30-40	7
40-50	6

A.10
B.30
C.20
D.50

Answer 1

Hint: As we know the class which has the highest frequency is called modal class and this modal class will be having a range. Later on, we get the lower boundary of the modal class and highest of each class. After that we need the lower limit of the modal class. Now, we know all the definitions to find the lower limit of the modal class.

Complete step-by-step answer:
From the table given in the question,
The class $20 - 30$ has the highest frequency $13$
Here, the modal class is $20 - 30$
So, the maximum class frequency is $13$ and the class corresponding to this is $20 - 30$
Therefore,
The lower limit of the modal class =$20$
Hence, the answer is C.

Note: As we know, high attention is needed to do these types of questions because we have to take a lot of values from the table and we will not mismatch the values. It should also be noted that there is a difference between modal frequency and mode. It is to be noted that to take the value of lower limit