Application of a generalized power transformation to geochemical data

  • R. J. Howarth
  • S. A. M. Earle

DOI: 10.1007/BF01043245

Cite this article as:
Howarth, R.J. & Earle, S.A.M. Mathematical Geology (1979) 11: 45. doi:10.1007/BF01043245


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 

Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • R. J. Howarth
    • 1
  • S. A. M. Earle
    • 2
  1. 1.Applied Geochemistry Research GroupImperial College of Science and TechnologyLondonEngland
  2. 2.Saskatchewan Mining Development CorporationSaskatoon, SaskatchewanCanada

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