Journal of the International Association for Mathematical Geology

, Volume 11, Issue 1, pp 45-62

First online:

Application of a generalized power transformation to geochemical data

  • R. J. HowarthAffiliated withApplied Geochemistry Research Group, Imperial College of Science and Technology
  • , S. A. M. EarleAffiliated withSaskatchewan Mining Development Corporation

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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.

Key words

geochemistry frequency distributions data transformation algorithm FORTRAN