quote:
Think about coin-tossing again. It is true that if you keep tossing the coin, the ratio of heads divided by tails will tend to 1. But it is not true that the difference of heads minus tails will tend to 0. It doesn't particularly tend to anything.
I think it does Dr A - the expectation value of the excess of heads or tails is the square root of n, where n is the number of tosses
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