Hi > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Manuel Figueroa > Sent: Friday, October 18, 2013 6:24 AM > To: r-help@r-project.org > Subject: [R] (no subject) > > I have a simple table, 2 columns and 1994 rows. First row, "Crime" is > how many crimes happen every month per 100000 inhabitants and second > row is "Income" which contains the average income recorded in a city. > > here's the head(dataset): > > Crime Income > 1 356.5152 4285.720 > 2 734.5625 4114.291 > 3 541.5171 3542.861 > 4 292.1667 4057.148 > 5 219.7747 4457.149 > 6 308.2538 6114.296 > > I want to stratify the crime based on income and then box plot each > stratum to compare. Also I need to get the variance of each stratum in > a table.
Homwork? There is no homework policy ot the list. Anyway, below are few hints. > > this is the summary of the Income column: > > Min. 1st Qu. Median Mean 3rd Qu. Max. > 2000 3257 3714 4001 4457 7714 > > > Closer I've been able to get is this: > strata=table(cut(dataset$Income, breaks, right= FALSE)) > > where breaks is > > breaks > [1] 2000 3500 5000 6500 8000 > > this gives me as result: > > cbind(strata) > strata > [2e+03,3.5e+03) 805 > [3.5e+03,5e+03) 894 > [5e+03,6.5e+03) 206 > [6.5e+03,8e+03) 89 > > > I'm not even sure if that's the right way to get the strata. It probably is unless you want breaks at other incomes. > > *The important thing here is I need to find a way to get a boxplot of > the Crime values in each stratum and the variance too. > * Split crime by strata and make boxplot. See ?cut ?split ?boxplot or use ggplot2. For var table see ?aggregate ?sd ?var Regards Petr > Thanks so much in advance. > > [[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. ______________________________________________ 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.
