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Standard VII

Mathematics

Mode

The blood gro...

Question

The blood group of 20 donors participated in blood donation camp are: A-, AB+, O-, O+, A-, A+, AB-, AB-, O-, O+, O-, A-, A+, AB+, O-, AB+, A+, B-, B+, B+

What is the mode of given data set ?

AB+

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AB-

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B+

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O-

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Solution

The correct option is D O-
In Statistics the mode is the maximum occuring frequency.

Here,
'A-' occurs 3 times , so 3 is the frequency of 'A-'
Similarily for others
'A+' occurs 3 times
'O-' occurs 4 times
'O+' occurs 2 times
'AB-' occurs 2 times
'AB+' occurs 3 times
'B-' occurs 1 times
'B+' occurs 2 times

Hence, the mode of given data set is 'O-'.

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Similar questions

Q. The blood group of

50

donors, participated in blood donation camp are

A, A B, B, A, O, A B, O, O, A, A B, B, A, O, A B, O, O, A, B, A, O, A B, O, O, A, A B,

B, O, A B, O, B, A, O, A B, O, O, A, A B, B, A, O, A B, O, A, A B, B, A, O, A B, O, O

Find the mode of the above verbal data:

Q. The blood groups of 30 students are recorded as follows:

A, B, O, A, A B, O, A, O, B, A, O, B, A, A B, B, A,

A B, B, A, A, O, A, A B, B, A, O, B, A, B, A

What are the frequency distribution for the data

A

and

A B

The blood groups of 30 students of class IX are recorded as follows:

$\begin{matrix} A, & B, & O, & O, & A B, & O, & A, & O, & B, & A, & O, & B, & A, & O, & O, A, & A B, & O, & A, & A, & O, & O, & A B, & B, & A, & O, & B, & A, & B, & O, \end{matrix}$

A student is selected at random from the class from blood donation. Find the probability that the blood group of the students chosen is:

(i) A (ii) B (iii) C (iv) O

Q. 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

.
Use this table to determine the probability that a student of this class, selected at random, has blood group

A B

A group of students from a school decided to donate blood. The blood groups of 16 students of class X are recorded as follows:

A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O, AB. Find the probability of blood group

a) O

b) A

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The blood group of 20 donors participated in blood donation camp are: A-, AB+, O-, O+, A-, A+, AB-, AB-, O-, O+, O-, A-, A+, AB+, O-, AB+, A+, B-, B+, B+ What is the mode of given data set ?

The blood group of 20 donors participated in blood donation camp are: A-, AB+, O-, O+, A-, A+, AB-, AB-, O-, O+, O-, A-, A+, AB+, O-, AB+, A+, B-, B+, B+

What is the mode of given data set ?