The blood groups of 30 students of a class are recorded as under
A, B, O, O, AB, O, A, O, A, B, O, B, A, O, O, A, AB, O, A, A, O, AB, B, A, O, B, A, B, O.
(i) Represent this data in the form of a frequency distribution table.

(ii) Find out which is the most common and which is the rarest blood group among these students.

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Solution

(i)
Blood group No.of students

A 9

B 6

AB 3

O 12

total=30


A	9
B	6
AB	3
O	12
	total=30

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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. Find out which is the most common and which is the rarest blood group among these students

The blood groups of $30$ students of Class VIII are recorded as follows:
$A, B, O, O, A B, O, A, O, B, A, O, B, A, O, O,$
$A, A B, O, A, A, O, O, A B, B, A, O, B, A, B, O$ .
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?

Question 1
The blood groups of 30 students of Class VIII are recoded 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?

Q. The blood groups of

36

students of IX class are recorded as follows.

$A$	$O$	$A$	$O$	$A$	$B$	$O$	$A$	$B$	$A$	$B$	$O$
$B$	$O$	$B$	$O$	$O$	$A$	$B$	$O$	$B$	$A B$	$O$	$A$
$O$	$O$	$O$	$A$	$A B$	$O$	$A$	$B$	$O$	$A$	$O$	$B$

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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(i) Blood group No.of students A 9 B 6 AB 3 O 12 total=30

(i)
Blood group No.of students

A 9

B 6

AB 3

O 12

total=30