Question

How do you solve for a mean absolute deviation? Can you explain it to me very well because I have no clue. All I know is that first you find the mean of all the numbers. That's it.

Answer 1

To find the mean absolute deviation, (MAD) find the mean of the distances of each number from the mean. For the first set: MAD=\frac{|10.7-6.55|+|2.4-6.55|}2=\frac{4.15+4.15}2=\frac{8.3}2=4.15 For the second set: MAD=\frac{|13.7-8.1|+|2.5-8.1|}2=\frac{5.6+5.6}2=\frac{11.2}2=5.6 Note that when you only have two data points the mean is directly between them, which is why the distances are the same.