[R] Question about geometric mean
r@hep@rd @end|ng |rom @pp|-eco@y@@com
Fri Oct 18 15:29:39 CEST 2019
On Fri, 18 Oct 2019, Mehdi Dadkhah wrote:
> I am using Interpretive structural modeling (ISM) ...
> My question is: How should I calculate geometric mean of experts’ opinions
I'm not a statistician, nor do I know anything about ISM. With that
disclosure I offer a couple of thoughts.
First, the calculation of a geometric mean involves multiplying the 'n' data
points and taking the 'nth' root of the product.
Second, expert (and others') opinions are along a continuum of a set,
perhaps ranging from 'Completely False' to 'Completely True'. I addressed
the need to quantify this subjectivity in environmental impact assessments
by using fuzzy sets and fuzzy logic in applying Thomas Saaty's 'Analytical
Perhaps these thoughts are usfull for you.
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