They are probably the same. It isjust that summary is printing out 4 significant digits. Try:
options(digits = 20) On Tue, Apr 5, 2011 at 12:38 PM, Daniel Malter <dan...@umd.edu> wrote: > Hi, > > I summary() a variable with 409908 numeric observations. The variable is > part of a data.frame. The problem is that the min and max returned by > summary() do not equal the ones returned by min() and max(). Does anybody > know why that is? > >> min(data$vc) > [1] 15452 >> max(data$vc) > [1] 316148 >> summary(data$vc) > Min. 1st Qu. Median Mean 3rd Qu. Max. > 15450 21670 40980 55500 63880 316100 > > > sessionInfo() > R version 2.11.1 (2010-05-31) > x86_64-apple-darwin9.8.0 > > locale: > [1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8 > > attached base packages: > [1] stats graphics grDevices utils datasets methods base > > other attached packages: > [1] sqldf_0.3-5 chron_2.3-39 gsubfn_0.5-5 > [4] proto_0.3-8 RSQLite.extfuns_0.0.1 RSQLite_0.9-4 > [7] DBI_0.2-5 > > Thanks much, > Daniel > > -- > View this message in context: > http://r.789695.n4.nabble.com/Precision-of-summary-when-summarizing-variables-in-a-data-frame-tp3428570p3428570.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > -- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? ______________________________________________ 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.
