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?

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Solution

The data is represented in form of a frequency distribution table by listing each type of observation and its occurrence/frequency in the data set.
The frequency distribution table is shown below for the given data.
Most common blood group $=$ Highest frequency of the blood group $= O$ ( $12$ students)
Rarest blood group $=$ Least frequency of the blood group $= A B$ ( $3$ students)

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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?

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

Q. 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, 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.

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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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?