Well, the main concern most people have with mean is if it ignores abstentions. Sum does not ignore abstentions, they are the same as a marked 0. But you're rig

Well, the main concern most people have with mean is if it ignores abstentions. Sum does not ignore abstentions, they are the same as a marked 0. But you're right that sum is like mean if mean counts all the abstentions as 0's. I'm open to the idea that actually using median is superior. Could you expound on that?