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Question

The blood groups of 36 students of IX class are recorded as follows.
AOAOABOABABO
BOBOOABOBABOA
OOOAABOABOAOB
Represent the data in the form of a frequency distribution table. Which is the most common and which is the rarest blood group among these students?

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Solution

Blood groups A B AB O
Frequency (f) 10 9 2 15
Most common blood group is O
Rarest blood group is AB

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