search for: mcfromnz

...d new R prompt, ran parts 0 and 2 ->got result 2, ran part 1 following part 2, got result 2a Why are the results different when they are run seperately and why do the commands produce the same results when running one after the other? Which results can I rely on? I based my script on: http://mcfromnz.wordpress.com/2011/03/0 ... explained/ <http://mcfromnz.wordpress.com/2011/03/02/anova-type-iiiiii-ss-explained/> but I surely made mistakes. Thanks for help. Kind regards, Christiane #0 library(car) P<-read.table("rhoPgegenrhoAgewichtet-mit Befruchtungssystem0912.txt", se...

...there are several ways to calculate the SS for C. What you have calculated looks like the "Type I SS" in SAS notation, if I remember correctly, assuming that C enters the model before B. That's not what R uses; I think it is Type II SS. For some details about this, see https://mcfromnz.wordpress.com/2011/03/02/anova-type-iiiiii-ss-explained/

...o calculate the > SS for C. What you have calculated looks like the "Type I SS" in SAS > notation, if I remember correctly, assuming that C enters the model > before B. That's not what R uses; I think it is Type II SS. > > For some details about this, see > https://mcfromnz.wordpress.com/2011/03/02/anova-type-iiiiii-ss-explained/ >

Hi, I have performed ANOVA as below dat = data.frame( 'A' = c(-0.3960025, -0.3492880, -1.5893792, -1.4579074, -4.9214873, -0.8575018, -2.5551363, -0.9366557, -1.4307489, -0.3943704), 'B' = c(2,1,2,2,1,2,2,2,2,2), 'C' = c(0,1,1,1,1,1,1,0,1,1)) summary(aov(A ~ B * C, dat)) However now I also tried to calculate SSE for factor C Mean = sapply(split(dat, dat$C), function(x)

...SS for C. What you have calculated looks like the "Type I SS" in SAS >> notation, if I remember correctly, assuming that C enters the model >> before B. That's not what R uses; I think it is Type II SS. >> >> For some details about this, see >> https://mcfromnz.wordpress.com/2011/03/02/anova-type-iiiiii-ss-explained/ >> > > ______________________________________________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-...