Answer :

The Mode of the given data is 71.42.

Step-by-step explanation :

Given :

To Find :

The mode.

Solution :

First of all Check that which is highest frequency among all.

If you see the table, We will found that :

The Class 60 - 80 has the highest frequency.

So, It implies - The Modal class - 60 - 80

Now,

Frequency of the class succeeding modal class (f₂) = 16

Frequency of the class preceeding modal class (f₀) = 14

Lower boundary of the modal class (l) = 60

Difference of lower boundaries = 40 - 20 = 20

____________{ Given in Table! }

We know that :

Put the values,