Revision history of "User:Brossa"

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  • curprev 01:21, October 5, 2008‎ Brossa talk contribs‎ 601 bytes +601‎ New page: Z-transformation: <math>Z_s=\frac{\sum_{i=1}^k Z_n}{\sqrt{k}}</math> Weighted Z-method: <math>Z_W=\frac{\sum_{i=1}^k w_i Z_i}{\sqrt{\sum_{i=1}^k w_i^2}}</math> where <math>w = \frac{1}{(...
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