We just care how far it is in absolute terms. So you have four data points. Each of their absolute deviations is four away, so the mean of the absolute deviations are one plus one plus one plus one, which is four, over four. So it's equal to one. So one way to think about it, it's saying on average, the mean of the distances of these points away from the actual mean is one. And that makes sense because all of these are exactly one away from the mean. Now let's see what results we get for this data set right over here.