Thanks Peter On Wed, Jan 15, 2014 at 7:23 PM, peter dalgaard <pda...@gmail.com> wrote: > The data have no resemblance to what prop.trend.test expects (counts and > totals, optionally group scores). > > The prop.trend.test() function tests for trend in proportions. Were you > attempting a rank correlation, or maybe a rank sum (Wilcoxon type) test > against a directional alternative? (I'm not too sure, but package "coin" > might have the latter). > > -pd > > On 15 Jan 2014, at 07:30 , Keniajin Wambui <kiang...@gmail.com> wrote: > >> I am using R3.02 on WIndows 7 64bit. >> How can I test for trend across ordered groups. I am using >> `prop.trend.test` but it doesn't order into groups and doesn't give >> the expected output of `sum of ranks` , `z value`... >> >> I have this data set and am doing >> >> `prop.trend.test (birthweight2$lbw2 ,birthweight2$gestwkgp2 )` >> >> Here is a sample data >> lbw2 gestwkgp >> normal birth weight 3 >> normal birth weight 3 >> normal birth weight 3 >> normal birth weight 4 >> normal birth weight 3 >> normal birth weight 3 >> normal birth weight 3 >> normal birth weight 4 >> low birth weight 2 >> normal birth weight 4 >> >> >> >> >> -- >> Mega Six Solutions >> Web Designer and Research Consultant >> >> ______________________________________________ >> 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. > > -- > Peter Dalgaard, Professor > Center for Statistics, Copenhagen Business School > Solbjerg Plads 3, 2000 Frederiksberg, Denmark > Phone: (+45)38153501 > Email: pd....@cbs.dk Priv: pda...@gmail.com >
-- Mega Six Solutions Web Designer and Research Consultant ______________________________________________ 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.
