They're only off by about 1% and the bias depends on which side was up, it's not that bad. I wouldn't expect most inexpensive dice to be substantially fairer than that.
Would spinning the coin get rid of that bias?
I have not read any stats on coin spinning, so I don't know!
I suppose it's basically flipping turned 90 degrees, so it might still be affected but which face is forward when being spun.
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They're only off by about 1% and the bias depends on which side was up, it's not that bad. I wouldn't expect most inexpensive dice to be substantially fairer than that.
Would spinning the coin get rid of that bias?
I have not read any stats on coin spinning, so I don't know!
I suppose it's basically flipping turned 90 degrees, so it might still be affected but which face is forward when being spun.