search for: geometricmean

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2024 Jan 22
2
Use of geometric mean .. in good data analysis
...-- do the things you learned to do quickly without too much thought, because things must happen fast ---to hopefully save the other's life. Here: Do log transform all such variables with further ado, and only afterwards start your (exploratory and more) data analysis. Now, mean(log(y)) = log(geometricmean(y)), where mean() is the arithmetic mean as in R {mathematically; on the computer you need all.equal(), not '==' !!} I.e., according to Tukey and all the other experienced applied statisticians of the past, the geometric mean is the "best thing" to do for such positive right-sk...
2024 Jan 22
3
Use of geometric mean for geochemical concentrations
A statistical question, not specific to R. I'm asking for a pointer for a source of definitive descriptions of what types of data are best summarized by the arithmetic, geometric, and harmonic means. As an aquatic ecologist I see regulators apply the geometric mean to geochemical concentrations rather than using the arithmetic mean. I want to know whether the geometric mean of a set of