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closeStatistical notation
Posted by JohnMashey on 20 Aug 2015 at 21:16 GMT
"edited on average (geometric mean ±SD) 1.9±2.7 times"
What do people think that means? See:
https://en.wikipedia.org/...
https://en.wikipedia.org/...
https://en.wikipedia.org/...
I'd suggest that the text just specific GM's and the table give GSDs, but with out the ± notation. Without computing skew and kurtosis of the log distribution, we don't really know much of its shape.
RE: Statistical notation
WilsonAdam replied to JohnMashey on 21 Aug 2015 at 01:26 GMT
Thanks John,
All the SDs that go with geometric means are geometric SDs. I thought it would be redundant to write ("geometric mean and geometric sd"), but perhaps it would have been clearer to be explicit. Regarding the +/- nomenclature, of course a geometric mean is actually multiplicative, not additive. We could have used */, but that could have also been confusing, especially for anyone not familiar with geometric SDs.