Question

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?

Answer 1

The blood groups of 30 students of class VIII are as follows

(i) Out of 30 students only three students have blood group AB. This is rarest blood group. 

(ii) Most common blood group students are 12. Hence ‘O’ is the maximum blood group.