Question

A doctor observed that the pulse rate of 4 students is 72,3 students in 78,2 students is 80.find the mean and mode of pulse rate of above students ?​

Answer 1

Answer:

72×4=288

78×3=234

80×2=160

MEAN=SUM OF OBSERVATIONS÷NO.OF OBSRRVATIONS

DUM OF OBSERVATIONS=288+234+160

=682

No.of observations=9

mean=682÷9

=75.7777777.....

=75.8

Answer 2

Answer:

The mean is $75.77$

Mode is $72$

Step-by-step explanation:

We know that

$Mean=\frac{Sum of observations}{Total observations}$

It is given that

pulse rate of four students is $73$

$Sum=72*4=288$

Also, as per question

$78*3=234$

and

$80*2=160$

Total observations $=9$

Using formula of mean,

$Mean=\frac{288+234+160}{9}$

$Mean=\frac{682}{9}$

$=75.77...$

Mode is the maximum repeated data in observation

Hence, $Mode=72$

#SPJ2