First, we have to arrange the weights (in kg) of 30 students of a class in an ascending order.
= 26, 29, 30, 31, 31, 32, 33, 33, 34, 35, 36, 36, 37, 37, 38, 38, 38, 39, 39, 39, 40, 41, 41, 42, 43, 43, 44, 45, 46, 46
Now, we will draw the frequency table of the given data.
(i) Class first has the least frequency.
(ii) Class third has the maximum frequency.