Dice Questions?

Kevin Cook

Explorer
JUNE 2019 HIGHLIGHTS

If you are not interested in new or rare dice that were added to the worlds largest collection of dice this month ... Please ignore this post



Click on the the Salvador Diceli (the Dice Lab) photo above to see highlights of dice added in JUN 2019



 

Kevin Cook

Explorer
JULY 2019 HIGHTLIGHTS

If you are not interested in new or rare dice that were added to the worlds largest collection of dice this month ... Please ignore this post



Click on the the "Pierced" d20 above above to see highlights of dice added in JULY 2019



 
Question: I have read mentions about a mathematical system to determin the "fairness" of a dice, i.e. does it roll all numbers roughly the same amount.
Unfortunately, I can neither remember where I came across that, nor remember how it was done exactly. It was something like "roll die lots and lots, then calculate how the spread deviates from the norm", or somesuch. Have you (or has anyone else) got a good pointer for me here on how to go about doing that to my dice?
 

Kevin Cook

Explorer
Try searching Chi Square ... I have heard that term used with regard to fairness

Question: I have read mentions about a mathematical system to determin the "fairness" of a dice, i.e. does it roll all numbers roughly the same amount.
Unfortunately, I can neither remember where I came across that, nor remember how it was done exactly. It was something like "roll die lots and lots, then calculate how the spread deviates from the norm", or somesuch. Have you (or has anyone else) got a good pointer for me here on how to go about doing that to my dice?
 

Len

Prodigal Member
It's been a long time since I took a stats course, but I think a good basic statistical test would be a Kolmogorov–Smirnov test to compare a die's results to a uniform random distribution. That's not difficult but it takes some basic familiarity with statistics.
 
@Kevin Cook do you know any way i can get a good quality well balanced d60 that wont make my wallet bleed as if from a grievous wound? Ive been looking for and wanting to buy one for almost 2 decades and ive only ever found either extremely expensive ones, ones i couldnt verify were balanced well, or could verify were specifically balanced poorly.
 
I cant really speak to balance as I have not tried them ... but I recently purchased a set of 6 ... black d60 in various colors on Aliexpress ... for $7.87 ... including shipping

WOW! THATS AN AMAZING PRICE! THANKYOU!

if you end up having a reason to roll them a bunch at some point and you find yourself having the opinion that they are pretty well balanced I'd love to know that because at that price i would buy them in a heartbeat if i knew they had at least pretty good balance! This is great news! thats an amazing price!
 

Kevin Cook

Explorer
If you are not interested in new or rare dice that were added to the worlds largest collection of dice this month ... Please ignore this post



Click on the the Legendary Pants die that I repainted photo above to see highlights of dice added in OCTOBER 2019

Can you guess why I named the die ... Hands up Yankees? ... or complete the command?



 

Kevin Cook

Explorer
If you are not interested in new or rare dice that were added to the worlds largest collection of dice this month ... Please ignore this post



Click on the the Easy Roller Dice Company ... d20 of the Giants (Frost) above to see highlights of dice added in November 2019



 

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