Tango Tiger has posted the table from that BP article as well, after changing it to r=.5 instead of r=.7http://tangotiger.com/index.php/site/co ... half-noise
And the article for the hitting statistics is here
Yeah, the LD% data was way off the first time. Don't know how that happened as it seems rather obvious that LD rate is extremely unstable. It's a good lesson to not just blindly trust any piece of research on the internet. The new ones seem to have a lot more reliability though, as the methods have been greatly improved and are well established, from what I understand.
Also, the data for pitchers is kind of deceiving as it seems that K% would be reliable after 70 PA, for example, but it's only reliable assuming that he faced a representative sample of hitters. Which is of course not true, especially for starting pitchers who may face the same weak team a couple times early on, accounting for the vast majority of their first 70 PA against. It would be nice to have a good "quality of competition" stat that could be used to roughly adjust a player's output. I'm sure it already exists somewhere.