An IE guy told me that the average for number of packages for businesses is 3.25, and the average number of pkgs for resi stops is 1.25 pkgs (this was a couple of years ago-might have changed since then). This was for ground-the NDA was 2.25 pkgs. I took some of the numbers in this thread, and the average is about 2.6 pkgs per stop. Interesting!