Errata in "Log-normal Distributions across the Sciences: Keys and
Clues"
by Eckhard Limpert and Werner Stahel, Bioscience 51, 341-352
- p.343, right, l.-8 and p.344, right, l.20:
-
skewed to the right instead of skewed to
the left
(In fact, the terms left and right skewed are not used uniformly in the
same way. A tower is skewed to the left if its upper end leans to the
left, and this use of the words contradicts their usual use in statistics.
A clearly defined term is "positively skewed" for such distributions.)
- p.344, Fig.3.(b)
-
The μ and σ used here are scaled versions of the usual
μ and σ used throughout the paper, since logs to base 10 are used.
The usual parameters are larger than these, by a factor
log(10) = 2.3.
- p.345, l.5 of the box:
-
mean ... exp(μ+σ2/2)
instead of
mean ... exp(μ+σ/2)
- General problem for the pdf version:
-
μ is often represented as ∝
(this problem does not appear in the printed jounal issue)