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Message: [QUOTE="zachvac, post: 655442, member: 26306"] OK, so I have some basic statistics knowledge, and I know how to calculate a standard deviation and what it means, but I either never learned this or am drawing a blank. Pokertracker gives standard deviation per hour. How can you calculate the standard deviation per 2 hours? per n hours? I can't even figure out if it should be higher or lower. You expect the results to regress to the mean, but that's the average. The standard deviation per 2 hours would have to be less than double the per hour calculation but I can't figure out if it would even be higher. This is just really confusing me, can someone help me out here? Thanks. [/QUOTE]