I am guessing they took the average homicide rate per ride in the metro, and used those rates to create the per capita rate assuming they take 500 rides a year.
I guess this is the same reason Ai clocks are stuck on ten to two. In case of the clocks it is because ten to twolooks nice on a clock so most images will have it. Ai doesn't understand how time corresponds to how a clock looks, just that something that looks like a clock has two lines there.
So since most depictions of wine glasses are half full, when you ask for a wine glass it will give you one that is half full. Fill level being somewhat irrelevant as it wasn't part of the training data
Khajiit had wares, all sold out.