Tom Willems wrote: > Dear R ussers, > > My question is, " How can my mean be outside the confidence intervals ?!" > > I think i have the answer for it, but i would like to hear some other > ideas on it. > > First my data is not continuose but categorical, it is a titre calculated > on a dilution serie. > It is stored as a column of values, and a column indicating the phase of > the trail. > Theoreticaly it is possible to have a value ranging from 0 to 4, but in > practice, only sertain values will occure, and they will repeat. > So it are frequencies. > > This is why i belief that it is better to work with a median than with a > mean, because it represents the cluster of values wich occure most. > Below I only give one example, but the mean being below the lowest > confidence limit occures several times over different tests. > > does my answer seam reasonable, or should i perhapes use an other methode, > any sugestion? > > summary_1d = summary(subset(eda_data, phase=='1' & test=='test > 1' ,select=lg_value), na.rm = T) > conf_1d = boxplot.stats(subset(eda_data, phase=='1' & > test=='test 1' ,select=lg_value)) > > Mean Median 95% Confidence Int. StDev. > Variance > 1.198 1.681 1.441 > < 1.922 0.931 > 0.866
I do not understand which "confidence" has been calculated? Based on which assumptions / data? Is it pointwise or not? We need much more information - and if you think it is a problem with R or usage of R functions, then please give us a reproducible example. Uwe Ligges > Kind regards, > Tom W. > > > Disclaimer: click here > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.