Collectable Rotation Analysis

[TechnoTechie]

I got bored and decided to look over my data again and do some analysis.
There's about 100 perception between floor (80 per methodical) and ceiling (115 per methodical), meaning you will in general gain 1 more rarity per 3 perception; this doesn't take into account that there appears to be "tier-based progression" (gains of 1-2 rarity at each tier, with each tier being about 5-6 perception).

I'm tempted to say that it's a standard bell curve centered at 97.5 (halfway between 80 and 115), but I haven't done any exact statistical analysis. The data seems to support this as you seem to get more rarity per perception around that area as well.

I also went back and tried appraisals with almost bare minimum perception (35 perception) and still got 80 for a methodical appraisal, so we can assume that this is the absolute minimum you'll ever get on a methodical appraisal, and we know that the ceiling is 115 because you'll never get more than that on an unbuffed methodical appraisal.