Application of a generalized power transformation to geochemical data |
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| Authors: | R J Howarth and S A M Earle |
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| Institution: | (1) Applied Geochemistry Research Group, Imperial College of Science and Technology, SW7 2BP London, England;(2) Saskatchewan Mining Development Corporation, S7K 2H6 Saskatoon, Saskatchewan, Canada |
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| Abstract: | In the context of analysis of variance, Box and Cox (1964) developed a generalized technique for power transformation of frequency distributions to normality. It is here applied to geochemical data, based on the nonlinear optimization of skewness and kurtosis. The transform appears to be particularly well suited to the preprocessing of geochemical data prior to multivariate analysis. |
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| Keywords: | geochemistry frequency distributions data transformation algorithm FORTRAN |
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