That's a lot of crying. Well, maybe not.
Ha- good catch! Corrected it.
That's a lot of crying. Well, maybe not.
Ive seen a d20 roll 20 five... five times in a row. Five. That's 1/20*1/20*1/20*1/20*1/20 , or 1/(20^5) or 3.125x10^-7, That's such a rediculously small chance that the die HAD to be bias. It doesnt matter if you DIDNT roll a certain number, it matters if a number occurs more often than others, especially if they occur consecutively. I have seen similar things happen with other die quite often, perhaps not 5 times but certainly 3 or 4 times in a row and these are dice from the chessex pound o' dice. In my experience 6s 10s and 20s are the worst. I'm fairly good with statistics as my job description requires it, I can confidently say that there are very biased tumbled dice. When this happens I give the offending player a GS die and they roll it and it shuts down these problems really fast.
... how are people arguing this ? It's physics. Break out some geometry, and some elementary physics and you can see clearly the bias in dice.
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Well, I have said what I needed, and backed up my claims with math and physics. There is nothing else I can possibly do to convince some of you I guess. Thanks for your time.
You haven't yet demonstrated any statistical acumen if you think that one observation of a dice that rolled 20 five times in a row is proof of statistical bias.I'm fairly good with statistics as my job description requires it, I can confidently say that there are very biased tumbled dice. When this happens I give the offending player a GS die and they roll it and it shuts down these problems really fast.
Bubbles are internal anyway; tumbling or not won't have any impact on dice with bubbles.Now, I will agree that there are probalby some dice out there, due to bubbles inside, or other imperfections, are just plain biased. But I think the odds of that are pretty low also, for all dice, tumbled or not.
You're not wrong about the impact of physics and geometry, you're wrong in that you've created a strawman where the significance of geometry and physics is absurdly exaggerated. Surely you can see the difference?... how are people arguing this ? It's physics. Break out some geometry, and some elementary physics and you can see clearly the bias in dice . The more the tumbling the worse the die is going to have bias. Think about if you tumbled a d20 into what you believe is a sphere (by your naked eye). If you were to roll that sphere the imperfections would invariable make a certain side of that sphere point up , every single time.
Actually, you haven't backed up your claims with much of anything at all. But surely, as a professional statistician, you already understand that.Evenglare said:Well, I have said what I needed, and backed up my claims with math and physics. There is nothing else I can possibly do to convince some of you I guess. Thanks for your time.
... how are people arguing this ? It's physics. Break out some geometry, and some elementary physics and you can see clearly the bias in dice .
Well, I have said what I needed, and backed up my claims with math and physics.
Bubbles are internal anyway; tumbling or not won't have any impact on dice with bubbles.