Dear Wu, Thank you indeed very much for your response. Is it possible that I use this method to compare the distribution of original population that this observations come from?
Thank you ideed very much. On 3/28/12, alan wu [via R] <ml-node+s789695n4511310...@n4.nabble.com> wrote: > > > try anova if they have same observe points. > > conditions<-rep(c(1,2),each=1600) > response<-sample (1:20,1600*2, replace= TRUE) > points<-rep(rep(1:400, each=4),2) > replicates<-rep(1:4,800) > obs<-data.frame(response,conditions,points,replicates) > fit <- lm(response~conditions+points,data=obs) > anova(fit) > > > On Mar 27, 3:13Â am, ali_protocol <mohammadianalimohammad...@gmail.com> > wrote: >> Dear all, >> >> Novice in statistics. >> >> I have 2 experimental conditions. Each condition has ~400 points as its >> response. Each condition is done in 4 repereats (so I have 2 x 400 x 4 >> points). >> >> I want to compare the means of two conditions and test whether they are >> same >> or not. Which test should I use? >> >> #populations >> c = matrix (sample (1:20,1600, replace= TRUE), 400 ,4) >> b = matrix (sample (1:20,1600, replace= TRUE), 400 ,4) >> >> #means of repeats >> c.mean= apply (c,2, mean) >> b.mean= apply (b,2,mean) >> >> #mean of experiment >> c.mean.all= mean (c) >> b.mean.all= mean (b) >> >> -- >> View this message in >> context:http://r.789695.n4.nabble.com/How-to-test-for-the-difference-of-means... >> Sent from the R help mailing list archive at Nabble.com. >> >> ______________________________________________ >> r-h...@r-project.org mailing >> listhttps://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting >> guidehttp://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. > > > _______________________________________________ > If you reply to this email, your message will be added to the discussion > below: > http://r.789695.n4.nabble.com/How-to-test-for-the-difference-of-means-in-population-please-help-tp4508089p4511310.html > > To unsubscribe from How to test for the difference of means in population, > please help, visit > http://r.789695.n4.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=4508089&code=bW9oYW1tYWRpYW5hbGltb2hhbW1hZGlhbkBnbWFpbC5jb218NDUwODA4OXwtMTkwNDgxNTk3NQ== -- View this message in context: http://r.789695.n4.nabble.com/How-to-test-for-the-difference-of-means-in-population-please-help-tp4508089p4516385.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.
