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Message: <blockquote data-quote="aramis erak" data-source="post: 9897219" data-attributes="member: 6779310">And yet, non-casino dice are notoriously uneven. Gamings most even dice still have minor flaws. (See Lou Zocchi's diatribe on it)... most commercial gaming dice are uneven and unfair; there was a big row about 2006 about GW's d6's being notably unfair using a chi² test of fit.Every box of d6 I've tested has a notable skew, that's about 4 boxes plus a double handful of singles... Usually on a single pair of faces: 3-4, 5-2, or 1-6.The Chi² test of fit to expected results is simple... it is a lot of rolling, but it's the standard for determining the fairness of a random or pseudorandom process - and if it comes up zero, it's probably non-random; fair as hell, but not random.My test of my buddy JJS' box of GW dice had a heavy skew to 5's and 2's... - balanced on other axis, but the 2 and 5 are opposites... and as Col Zocchi says, dice tend towards lowering the center of gravity... which says the GW dice tended towards being short on the 2-5 axis. Just a tiny bit short... but enough to make 5 and 2 twice the probability of 1 and 6... we spent an hour rolling and counting. 60 rolls per die... That box was definitely unfair.Other boxes have had different skews. Makes me wonder about my ALIEN dice. I got some suspiciously high rates of 6's and 1's last saturday.I'll note that neither my FFG Star Wars nor L5R dice have been tested, as in those games, because the dice are so uniform, any skew is built into the game already. (Plus, due to repeated results on a single die, tracking which is which means modifying the dice to be able to find axial issues. I could still test for expected results... but I'm lazy these days.)</blockquote>

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