Question

The blood groups of 25 students of class IX 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.

Represent this data in the form of a frequency distribution table.
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Answer 1

Answer:

Blood groups A B AB O

Frequency (f) 10 9 2 15

Most common blood group is O

Rarest blood group is AB