The blood groups of 30 students of a class are recorded as under:A, B, O, O, AB, O, A, O, A, B, O, B, A, O, O, A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O.(i) Represent this data in the form of a frequency distribution table.(ii) Find out which is the most common and which is the rarest blood group among these students.

The blood groups of 30 students of a class are recorded as under:A, B,

1.	The blood groups of 30 students of a class are recorded as under:A, B, O, O, AB, O, A, O, A, B, O, B, A, O, O, A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O.(i) Represent this data in the form of a frequency distribution table.(ii) Find out which is the most common and which is the rarest blood group among these students.
Answer» The blood groups of 30 students of a class are recorded as under: A, B, O, O, AB, O, A, O, A, B, O, B, A, O, O, A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O. (i) Represent this data in the form of a frequency distribution table. (ii) Find out which is the most common and which is the rarest blood group among these students.