Class 9th maths chapters 14 exercise 14.2 question 1
Answers
Step-by-step explanation:
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?
Solution:
Frequency is the number of students having the same blood group. The frequency is represented in the table or the frequency distribution table:
Blood Group
Number of Students
(Frequency)
A 9
B6
O12
AB3
Total
30
The most common Blood Group is the blood group with highest frequency: O
The rarest Blood Group is the blood group with lowest frequency: AB
Class 9th maths chapter 14 exercise 14.2 question 1 is given below:-
Question:
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?
Answer:
Provided the frequency distribution table in the given attachment -
As you can see in the attachment-
Blood group in the First column
Tally in the Second column
A number of students in the Third column.
Number of students with "A" group = 9
Number of students with "B" group = 6
Number of students with "AB" group = 3
Number of students with "O" group = 12
Total number of students -
= 9 + 6 + 3 + 12 = 30
Finding Most common Blood Group -
Most common Blood Group is the blood group with the maximum number of students = "O"
Finding Rarest Blood Group -
Rarest Blood Group is the blood group with a minimum number of students. = "AB".
