and SAS give one a choice of 5 option, and i'm fairly sure that it used a different default than does R (although one of the 5 corresponds to the sas default)
see pctldef on http://www.technion.ac.il/docs/sas/proc/z0146803.htm my simple brain thinks of thinks of the problem as 'how does one calculate the median of 4 values?' david freedman Girish A.R. [via R] wrote: > Interestingly, Hmisc::describe() and summary() seem to be using one > Type, and stats::fivenum() seems to be using another Type. > > > fivenum(cbiomass) > [1] 910.0 1039.0 1088.5 1156.5 1415.0 > > summary(cbiomass) > Min. 1st Qu. Median Mean 3rd Qu. Max. > 910 1048 1088 1104 1139 1415 > > describe(cbiomass)$counts > n missing unique Mean .05 .10 .25 > .50 .75 > "12" "0" "12" "1104" " 920.5" " 938.3" "1047.5" > "1088.5" "1138.8" > .90 .95 > "1248.7" "1327.0" > > cheers, > -Girish > > View message @ > http://n4.nabble.com/Quartiles-and-Inter-Quartile-Range-tp1145817p1248728.html > > > To unsubscribe from Re: Quartiles and Inter-Quartile Range, click here > < (link removed) =>. > > -- View this message in context: http://n4.nabble.com/Quartiles-and-Inter-Quartile-Range-tp1145817p1264043.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org 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.
