Subscribe to this feed via RSS![Students really don’t get randomness. This is the classic Trick Coin Flip question — I have a trick coin that either comes up heads a bit more than tails, or tails a bit more than heads [They sell trick coins both ways, apparently]. I don’t know whether this particular trick coin tends towards heads or tails, and I don’t know by how much.
We call the tendency of the trick coin to “tilt” results in one direction it’s bias. I have the trick coin in my hand. Which of the following would give me the best idea of the coin’s bias?
10 flips?
100 flips?
1000 flips?
or, it doesn’t matter, all of these give you the same idea of the coin’s bias.
The results from class you can see above. More later on this.](http://24.media.tumblr.com/tumblr_lzgbr98ZCD1qavqgyo1_1280.png)
Students really don’t get randomness. This is the classic Trick Coin Flip question — I have a trick coin that either comes up heads a bit more than tails, or tails a bit more than heads [They sell trick coins both ways, apparently]. I don’t know whether this particular trick coin tends towards heads or tails, and I don’t know by how much.
We call the tendency of the trick coin to “tilt” results in one direction it’s bias. I have the trick coin in my hand. Which of the following would give me the best idea of the coin’s bias?
- 10 flips?
- 100 flips?
- 1000 flips?
- or, it doesn’t matter, all of these give you the same idea of the coin’s bias.
The results from class you can see above. More later on this.
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