Ok, guys. I need some brainpower here.
I've been wondering about how the game decides to roll affixes. It's a pretty complicated pursuit do the vast qty of affixes out there, so I wanted to start small and build up. I decided the easiest place to start would be single resists because they are very common. There were three questions I originally asked:
1 - Is the determination of which rank of affix to give completely random or is it skewed? For example, if the item is capable of rolling rank 52, 58, 60, 61, and 62, do each appear the same % or no?.
2 - Once a rank is determined, is the actual roll inside that min and max of that rank rolled randomly or is it skewed.
3 - Is the determination of the rank related to Act at all.
We started a project to log every piece of gear that has single resist on it. Basically, if you found any piece of gear that had a single resist, you'd just put the ilvl and resist amount into a spreadhsheet and we'd keep track of which ranks had been selected.
I also pulled data out of these threads:
I happened to compare the results today.
Pulling ilvl62-only pieces from the gear we looted and screen-capped:
Samples that rolled Max Rank: 130 (60.2%)
Range with 95% confidence: 54% - 67%
Samples that rolled Max Rank: 306 (39.2%)
Ranged with 95% confidence: 36% - 43%
So... I thought at first that this was indicating that crafted gear was not as good as looted gear. However, I then remembered that one of our contributors had been flagging rare drops vs magic. I went back and looked at just his rare drops, and THEY were ~40%, too. We're going to restart the research, tracking rare vs magic, but I feel strongly that Blizz gives magic items a better chance to get high rolls than rare items.
If anyone would like to help, I'd appreciate the additional datapoints.
I've setup a new sheet to track it, but ignore the charts for now because I haven't finished fixing them yet.
Edited by ztking, 31 August 2012 - 04:09 PM.