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Explaining (J)SD w/GNU & rollouts

Posted By: Bob Koca
Date: Tuesday, 16 October 2007, at 8:51 p.m.

In Response To: Explaining (J)SD w/GNU & rollouts (Bryce)

**This is because, while standard errors do not add, the variances (which are the squares of the standard deviation) do: Var(A-B) = Var(A+B) = Var(A) + Var(B).

Var(A + B) = Var(A) + Var(B) is true in the case of A and B being independent. I don't know if it matters enough to worry about but I think they are not independent due to parallel dice used in rollouts.

Bob Koca

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