Answer: 2
Step-by-step explanation
Your teacher has done much of the work for you already. She or he calculated the mean to get 18. Then subtracts the mean from each number and uses absolute value to ensure the result isn't negative.
Then we average the values in blue. Add them up. Divide by five.
Add: 1+4+1+3+1 = 10
Divide: 10/5 = 2
The mean absolute deviation (MAD) is 2. It is one way to measure how spread out a data set is. The larger the MAD, the more spread out the set will be. Other measures of spread are the range and standard deviation.