Solution:
It is required to find the sum of lower limits of the median class and modal class.Calculate the modal class and the median class's combined lower bounds.
By accumulating each previous frequency, start by calculating the cumulative frequency.
Then,The cumulative frequency chart shows that 33 is somewhat close to 37.
Therefore, the average class size is between 10 and 15.
Lower limit of the median class =10.
In the sample distribution, the maximum frequency is 20, which falls in the class of 15-20.
Therefore, the modal class's lower limit is set to 15.
The lowest limit of the modal class and median class added together is 10 + 15 =25.
As a result, 25 is the result of adding the median class and modal class lower limits.
The correct answer is option 3.
