search for: hsd

I have a model that looks like this (with various other methods) class HsdPair attr_accessor :hsd def initialize(hsd) @hsd = hsd @current_display = 0 @has_changed_flag = false end end After initializing this object in the controller @hsd_pairs = HsdPair.new(@job.hsd_pairs) using it in the view various times and in various ways, when I try to pass thi...

Dear list members, I'm running some tests looking at differences between means for various levels of a factor, using Tukey's HSD method. I would like to plot the data as boxplots or dotplots, with horizontal significance lines indicating which groups are statistically significantly different, according to Tukey HSD. Here's a nice image showing an example of such a graphical display: http://www.biomedcentral.com/1...

Dear all, I would be glad if someone could tell me if Tukey HSD (function of stats library) accept the NA values and could correct the unbalanced design (different number of sample in each group) Thanks for help Alice Le Bars

Hi, I'm designing a experiment in order to compare the growing of several clones of a tree specie. It will be a complete randomized block design. How can I decide what model of mean comparision to choose? LSD, HSD,TukeyHSD, Duncan,...? Thanks in advance

Hi, I need to determinate HSD value from a matrix like that Thesis Days A1 Cx 0 66.07 Cx 0 60.24 Cx 0 42.86 Tw 0 66.07 Tw 0 60.24 Tw 0 42.86 Aa 0 66.07 Aa 0 60.24 Aa 0 42.86 Qe 0 66.07 Qe 0 60.24 Qe 0 42.86 Cx 56 310.86 Cx 56 223.17 Cx 56 186.77 Tw 56 149.42 Tw 56 127.75 Tw 56 138.59 Aa 56 130.24 Aa 56 214.83 Aa 56 137.95 Q...

...new to R and it's still a challenge to me. Currently I'm working on my Master's Thesis. My supervisor works with SAS and is not familiar with R at all. I want to run an Anova, a tukey-test and as a result I want to have the tukey-grouping ( something like A - AB - B) I came across the HSD.test in the agricolae-package, but... unfortunately I do not get an output (like here in the answer http://stats.stackexchange.com/questions/31547/how-to-obtain-the-results-of-a-tukey-hsd-post-hoc-test-in-a-table-showing-groupe ) I did it like this: ###### ANOVA anova.typabunmit<-aov(ds.typa...

Dear all, I am doing a one way between subjects anova in an unbalanced data set. Suppose we have "a" levels of the one factor. I want to merge the not so significantly different levels into the same cluster. Can I do a Tukey Kramer HSD and then use the following algorithm: For i in 2 : "a" For j in 1 : i-1 if mean of level i is not significantly different to the mean of level j,then put i and j in the same cluster. After the first time mean of level i is not different to the mean of level j , just goto...

Dear all Is there any way of doing a Tukey HSD post-hoc test after a Kruskal- Wallis or Friedman rank sum test (in the ctest package)? Thanks in advance, Albertus Dr. Albertus J. Smit Department of Botany University of Cape Town Private Bag Rondebosch 7700 South Africa Tel. +27 21 689 3032

Hi everyone I'm using Tukey HSD as post-hoc test following a lme analysis. I'm measuring hemicelluloses in different species treated with three different CO2 concentrations (l=low, m=medium, h=high). The whole experiment is a split-plot design and the Tukey-function from the package multcomp is suitable for lme-analysis w...

dear all effect of a, b and c on d, total 48 comparisons, got one anova result in model1=aov(d~A*B*C). can we get all the result in one command? or can we interpret the whole comparisons from this result? how it work in Tukey HSD? jose ____________________________________________________________________________________ Access over 1 million songs.

...Df Sum Sq Mean Sq F value Pr(>F) condition 2 615.82 307.91 6.6802 0.002501 ** group:condition 2 61.51 30.75 0.6672 0.517168 Residuals 56 2581.18 46.09 --- Signif. codes: 0 ?***? 0.001 ?**? 0.01 ?*? 0.05 ?.? 0.1 ? ? 1 > I cannot find a way to perform a Tukey HSD on the main effect of condition. since the ANOVA formula contains the 'error' command. Could you help me please? Kurt _________________________________________________________________ [[trailing spam removed]]

....99) Aptecha=c(121.02,55.30,93.45,137.70,22.48,161.93,64.53,59.83,57.75,58.79) y=c(US1,US2,Aptecha) n=rep(10,3) group=rep(1:3,n) data = data.frame(y = y, group = factor(group)) fit = lm(y ~ group, data) anova(fit) summary (fit) -- View this message in context: http://r.789695.n4.nabble.com/Tukey-HSD-not-working-tp3084505p3084505.html Sent from the R help mailing list archive at Nabble.com.

...reated. The GOAL: All I want in the world is a program that performs 1-way ANOVA's on every column in a data set (taking the first column as the definition of the groups) and then spits out ONLY those results that were significant (p <= whatever I want), with their respective plots and TukeyHSD results. Sounds simple, right? Data: http://r.789695.n4.nabble.com/file/n4374072/test_text.txt test_text.txt (see upload) CODE: ( which occurs after TEST <- read.table("test_text.txt") ) i <- 2; sink (file = "test_output.txt", append = FALSE) mydf <- data.frame(T...

Hi all!

Hello, I am a little out of date and am still using S-Plus instead of R. I haven't been able to find the right place to ask this question, so I thought I would ask it here and hope that someone can help. I am unable to located the TukeyHSD() function in S-Plus. I have been able to use the GUI to run Tukey's test, but the results don't provide a p-value. Does anyone know how I can go about obtaining or calculating a p-value for Tukey's test using S-Plus? Thank you! ___________________________________________...

...in Glm (glm) und anschlie?end eine Anova (anova) durchgef??hrt. Nun m??chte ich f??r die signifikanten Einflussfaktoren einen Post Hoc Tukey Test durchf??hren, um zu ermitteln in wie weit die einzelnen Faktorstufen sich signifikant voneinander unterscheiden. Mit dem Befehl (TukeyHSD) komme ich nicht weiter, weil derscheinbar mit den Ergebnissen der Anova nihct zurecht kommt. Er basiert wohl auf aov- Datentypen. F??hre ich die Anova dann mit dem Befehl aov durch und dann den Tukey Test, bekomme ich als Antwort, dass keine Faktoren im gefitteten Model vorhanden si...

Hi, I did the analysis of variance of a split-plot and the effect of treatment was significant. I would like compare treatment means using Tukey. I can't extract the mean square to apply HSD.test to use in agricolae package. anava = aov(ganhos ~ Blocos + Trat*Supl + Error(Blocos/Trat)) names(anava) summary(anava) require(agricolae) HSD.test(ganhos, Trat, df, MSerror, alpha = 0.05) Thanks -------------------------------------- Silvano Cesar da Costa Departamento de Estat?stica Uni...

I am a new R user but a long time SAS user. I searched for a response to this question but no luck, so forgive me if this topic has been covered before. I am running a TukeyHSD post hoc test after running an ANOVA. I get the results of all pairwise comparisons, no problem. However, the output table is a little "busy", and I'd like to make the output easier to read. Specifically, I would like all groups which are not significantly different to be given the sa...

...c test following up a within-subjects ANOVA. The dv is reaction time (RT), there is a 3-level Condition factor (Cond; within-subjects), a number of subjects (Subj), and the dataframe is called WMU3C. The model is > RT.aov <- aov(RT~Cond + Error(Subj/Cond), WMU3C) I understand that TukeyHSD only works with an aov object, but that RT.aov is an aovlist object. > class(RT.aov) [1] "aovlist" "listof" I've tried to work around it using the "maiz" example in the MMC documentation of the HH package (a solution previously recommended), but I couldn...

...t I need something that has a manual. Is there a Scheffe function out there that is reasonably well documented, or should I consider some other method of dealing with this data. We have been using Scheffe for this type of analysis as I was under the impression it was very conservative. Tukey's HSD seems to be conservative as well. Should I try this? Is there a different approacch that is better and where can I read about it. Thanks for any help you can provide. Sam