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Portable Network Graphic  |  1994-04-29  |  93KB  |  816x1056  |  8-bit (256 colors)
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OCR: Biplots The biplot (Gabriel, 1971) shows an approximation to set of both variables and points in one graph. If you select two or three principal components as the axes then variable rays are shown and the resulting presentation is what Gabriel terms the IK principal componentbiplot. These plots approximate the higher dimensional distance configuration betwee points in a two or three-dimensional subspace Each ray corresponds to hypothetical observation where all the values are the mean except the value for one variable which is set to three standard deviations above the mean each principal component standardized by its standard deviatior then the result GH' biplot, which represents the variable intercorrelations better than the JK' biplot, but not as good at approximating interpoint distanc ...