Please @berniesanders, can you stop this spamming. People have questions they want answered without your spam and flagging. Although, if you read this, you might as well answer my question (I didn't give upvote to the post if that makes you happy). My question is: When haejin talks about the "mean" in this post, which mean is he talking about? The daily average? The weekly average? I think this should be specified, otherwise, it makes little sense to talk about how the price is currently more than two standard deviations away from a mean which from the picture seems kind of unrelated to the actual price graph.