Question

1. The blood groups of 30 students of a 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

From the table we observe that most common blood groups is O (12 times maximum) and the rarest group is AB (3 times least).

Answer 2

Step-by-step explanation:

Blood group Number of students

A 9

B 6

O 12

AB 3

Total 30

Most common - O (12 students)

Rarest - AB (3 students)