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, 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?
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Answer:
most rarest is AB
Most common is O
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