4. Write the modal class of the following frequency distribution: Class interval
10-20 , 20 - 30 ,30 - 40, 40-50, 50 - 60

Frequency..
33
38
65
52
19
48

The modal class, or mode class, is the class that has the highest frequency. Visually on a bar graph or histogram, it is the bar that is the tallest.

In this case, the highest frequency is 65 which corresponds to the class 30-40. The third frequency is the highest, so the third class is the modal class.

41*67/2=1373.5

step-by-step explanation:

i just used a calculator