Question

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

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