Title: Geometric Standard Deviation - Reply to Bohidar
Abstract: Bohidar (1) comments that a formula I proposed (2) for geometric standard deviation (GSD) is “absolutely incorrect”. This comment is based on erroneous interpretation of my proposal and to avoid further confusion it may be helpful to point this out. The issue addressed in ref(2) was how to summarize the extent of statistical variation in a sample of data drawn from the lognormal distribution, for which the underlying variation is multiplicative. This situation was contrasted with the normal, or Gaussian, distribution for which the underlying variation is additive. Normally distributed data are conveniently summarized by a mean plus or minus a standard deviation (SD) (or standard error, SE). For lognormal data the geometric mean was available as replacement for the ordinary mean, but no direct analogue existed for SD (or SE).
Publication Year: 1993
Publication Date: 1993-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 7
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