The statement about spinning is too weak. You have to spin rather than flip to try to reveal bias: http://www.stat.columbia.edu/~gelman/research/published/diceR

The statement about spinning is too weak. You have to spin rather than flip to try to reveal bias: http://www.stat.columbia.edu/~gelman/research/published/diceRev2.pdf http://www.stat.columbia.edu/~gelman/research/published/dice... As for the statistical significance, here's another view of how to do it: http://www.inference.phy.cam.ac.uk/mackay/abstracts/euro.html http://www.inference.phy.cam.ac.uk/mackay/abstracts/euro.htm...