1. The blood groups of 30 students of Class VIII are recorded as follows:
A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O,
A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O.
Represent this data in the form of a frequency distribution table. Which is the most
common, and which is the rarest, blood group among these students?
The blood group of 30 students from the class can be represented as follows.
Most common blood group
= Blood group with the maximum number of students
= O
Rarest blood group
= Blood group with minimum number of students
=AB