1. The blood groups of 30 students
of 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?
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Answer:
ANSWER
Blood group Number of students
A 9
B 6
O 12
AB 3
Total 30
Most common - O (12 students)
Rarest - AB (3 students)
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