In another topic, some questions about stats were asked. I thought it might be a good idea to have an open thread where people can ask any questions they have about stats, sabermetric or otherwise. I'm hardly the most qualified to answer all questions, but I have a decent grasp of sabermetric stats and I'm hoping/expecting any and all people to contribute to the answering. So, please, if you've wondered what some of us are referring to in other threads (xFIP, EqA, BABIP, etc.) please don't hesitate to ask.
P.S. Let's try to keep this thread relatively non-hostile, if possible. I know that the subject of sabermetric stats can be a little controversial at times, and I know that I'm hardly the role model in keeping things mellow, but let's try.
P.P.S. See how easy it is to put together 75 words? I'm a terrible writer and I managed it, even without the P.S. and P.P.S.