Revision history of "User:Brossa"

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  • (cur | prev) 20:21, 4 October 2008Brossa (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}{(...)