The answer is 8 .. hope this helps a lot :)
Answer:
sowwy
Step-by-step explanation:
i can't help WITH MY SMALL BRAIN
The mean deviation of the ratings is 4.12
<em><u>Explanation</u></em>
The ratings of the ten experts are: 34, 35, 41, 28, 26, 29, 32, 36, 38 and 40
So, the mean of all ratings 
<u>The formula for Mean deviation</u>
, where
is the given data from
to
,
is the mean of the data and
is the total number of data. So.....

So, the Mean deviation 
A. 6c
B. -5c
C. -0.7c
D. 2c
Just a few you could use.
Age of a dog (age is a number)