Observations of a data are 16, 72, 0, 55, 65,55, 10 and 41. Chaitanya calculated the mode and median without taking the zero into consideration. Did Chaitanya do the right thing?

The following distribution gives the state-wise , teacher -student ratio in higher secondary schools of India . Find the mode and mean of this data . Interpret the two measures . {:("Number of students","Number of states"),(15-20,3),(20-25,8),(25-30,9),(30-35,10),(35-40,3),(40-45,0),(45-50,0),(50-55,2):}