[FoRK] Coin flips not random
ejw at cs.ucsc.edu
Tue Nov 3 01:28:20 PST 2009
Er, should be more precise. Coin flips not *evenly* random is what I
meant to say.
Jim Whitehead wrote:
> Heads or tails? It depends on how you flip it
> By Jon Wilner and Mark Emmons
> Mercury News
> But first, here's what the researchers concluded: Using a high-speed
> camera that photographed people flipping coins, the three researchers
> determined that a coin is more likely to land facing the same side on
> which it started. If tails is facing up when the coin is perched on
> your thumb, it is more likely to land tails up.
> How much more likely? At least 51 percent of the time, the researchers
> claim, and possibly as much as 55 percent to 60 percent — depending on
> the flipping motion of the individual.
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