Hey folks, I wrote up a piece on an ongoing issue I see with percentiles being used systems monitoring. Basically, don't ever average or aggregate percentiles, they are outputs for analysis, not inputs. Every so often I'll see comments on Hacker News (or here on Reddit) saying that there are certain conditions where you can average percentiles and get statistically correct results, so I presented a couple of scenarios that I hope clears up why you still shouldn't do that.
SOCIAL SHARE CARD GENERATOR