Question

the sum of deviation taken from 10 , 20 , 30 and 40 are -56 , -20 , 0 and 60 respectively . If distribution is normal or symmetric find the mean.

Answer 1

Given :  sum of deviation taken from 10 , 20 , 30 and 40 are -56 , -20 , 0 and 60 respectively . distribution is normal or symmetric

To Find :  Mean

Solution:

the sum of deviation taken from 10 , 20 , 30 and 40 are -56 , -20 , 0 and 60 respectively . If distribution is normal or symmetric find the mean.

in Symmetric data or normal distribution

data is equally spread both sides of mean

Hence deviation from mean is  zero  in Normal or symmetric distribution  

sum of deviation taken from 30  is 0

distribution is normal or symmetric  

Hence Mean   is  30  

Learn More:

the salary of workers of a factory is known to follow normal ...

https://brainly.in/question/11249348

What a question !! I need your help. The height measurements of ...

https://brainly.in/question/18011551