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Some consequences of applying lognormal theory to pseudolognormal distributions

  • Richard F. Link
  • George S. KochJr.
Article

Abstract

A logarithmic transformation may be used to improve the efficiency of estimates of the mean when observations follow the lognormal distribution. But if this transformation is applied to observations that follow another distribution, bias may be introduced. We consider some consequences of erroneously applying lognormal estimation theory and demonstrate that biased estimates may be obtained for certain classes of distributions. Illustrations of bias obtained in gold sampling are given.

Key words

data processing lognormal theory sampling simulation statistics transformations economic geology mining sedimentology 

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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • Richard F. Link
    • 1
  • George S. KochJr.
    • 2
  1. 1.Artronic Information SystemsNew YorkUSA
  2. 2.Department of GeologyUniversity of GeorgiaUSA

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