The blood groups of 30 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, O, B, A, B, O. Represent this data in the form of frequency distribution table. Which is the most common, and which is the rarest, blood group among these students?
The blood groups of 30 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, O, B, A, B, O. Represent this data in the form of frequency distribution table. Which is the most common, and which is the rarest, blood group among these students?
It can be observed that 9 students have their blood group as A, 6 has B, 3 has AB and 12 has O.
Therefore, the blood group of 30 students of the class can be represented as follows.
It can be observed clearly that the most common blood group and the rarest blood group among these students is O and AB respectively as 12 (maximum number of students) have their blood group as O, and 3(minimum number of students) have their blood group as AB.
It can be observed that 9 students have their blood group as A, 6 has B, 3 has AB and 12 has O.
Therefore, the blood group of 30 students of the class can be represented as follows.
It can be observed clearly that the most common blood group and the rarest blood group among these students is O and AB respectively as 12 (maximum number of students) have their blood group as O, and 3(minimum number of students) have their blood group as AB.
