List of top Mathematics Questions on frequency distributions asked in AP POLYCET

The modal class of the following frequency distribution is

Class Interval	0-20	20-40	40-60	60-80	80-100
Number of Students	15	18	21	29	17

If the mean of the following frequency distribution is 15, then the value of y is

x	5	10	15	20	25
f	6	8	6	y	5

The modal class for the following frequency distribution is

x	Less than 10	Less than 20	Less than 30	Less than 40	Less than 50	Less than 60
f	3	12	27	57	75	80

The difference between the maximum and minimum observations in the data is