Write the modal class for the following frequency distribution:
Class-interval: | 10-15 | 15-20 | 20-25 | 25-30 | 30-35 | 35-40 |
Frequency: | 30 | 35 | 75 | 40 | 30 | 15 |
As class of maximum frequency is called modal class.
Modal class in above case is 20-25 as 75 is maximum frequency.