So you're taking each of the data points, and you're seeing how far it is away from the mean. You're taking the absolute value, because you just want to figure out the absolute distance. Now you see, or maybe you see, 4 minus 4, this is, let me do this in a different color, 4 minus 4, that is the 0. That is that 0 right over there. 5 minus 4, absolute value of that, well, that's going to be, let me do this in a new color, this is just going to be 1. This thing is the same thing as that over there. And we were able to see that just by inspecting this graph or this chart.