similar to: Nemenyi test as a post-hoc test to Kruskal Wallis

Displaying 20 results from an estimated 492 matches similar to: "Nemenyi test as a post-hoc test to Kruskal Wallis"

2012 Jan 09
2
Unexpected results using the oneway_test in the coin package
Dear fellow R users, Keywords: Kruskal-Wallis, Post-Hoc, pair-wise comparisons, Nemenyi-Damico-Wolfe-Dunn test, coin package, oneway_test I am using the "oneway_test" function in the R package "coin" and I am obtaining results which I cannot believe are accurate. I do not wish to waste anyone''s time and so if the following problem is rather trivial, I apologize,
2005 May 31
6
post hoc kruskal wallis
Hola, Tengo un problema con el post hoc kruskal wallis. No encuentro en el SSPS ning??n test estad??stico para el post hoc. En el libro de "Zar" proponen el Turkey-type nonparametric multicomparison. Mi problema es que tengo muchos datos y hacerlo a mano es complicado. El R es un programa que conozco menos, no se si habr?? alguna prueba que pueda servir. Los test del paquete npmc no
2008 Mar 06
2
kruskal wallis post hoc test in R
Hello, I need nemenyi-test or any other post-hoc test for kruskal-wallis, but I just can''t find out how to implement this in R. My data set is nitrite concentrations in four different groups which I intend to compare. The kruskal-wallis-test showed significance, but I still don''t know between which groups these significances are. Can anybody help me with this? Thanks
2005 May 02
2
Nonparametric Tukey-type multiple comparisons "Nemenyi" test
I am trying to do a Nonparametric Tukey-type multiple comparison post-hoc test to determine which groups are significantly different. I have read the dialogue on this topic from the R-help, and am still not clear why no statistical packages include this test as an option? Is it not an appropriate test to conduct on non-normally distributed data? Is the only option to calculate it by hand
2007 Oct 26
1
Post-hoc test for Kruskal-Wallis
Hi there, I''ve got a small question : is there any post-hoc test for Kruskal rank sum test integrated in R ? I know that the Nemenyi test is one of the post-hoc that can be used, but there''s no (to by knowledge) R function for it. What should I do ? Thanks, Etienne
2009 Mar 30
0
Kruskal-Wallis-test: Posthoc-test?
Hello. We have some questions concerning the statistical analysis of a dataset. We aim to compare the sample means of more than 2 independent samples; the sample sizes are unbalanced. The requirements of normality distribution and variance homogeneity were not met even after transforming the data. Thus we applied a nonparametric test: the Kruskal-Wallis-test (H-Test). The null hypothesis was
2009 Jun 19
2
Post-Hoc Test for Kruskal-Wallis Rank Sum Test
Hi list, I would like to know if there is a way in R to execute a post-hoc test (factor levels comparison, like Tukey for ANOVA) of a non-parametric analysis of variance (kruskal.test() function object). I was looking for something like the Dunn Test. I’ve searched the internet but nothing seemed to define a way to it. Do You have any suggestion? Other equivalent test maybe! Thanks in
2006 Nov 07
0
Nemenyi test for two way layout data.
I am trying to do a Nonparametric Nemenyi test for multiple comparison in a two way layout data because I need to know the exact distribution. I don?t know if this test is in the R software. I just found a Nemenyi test for a one way design. But in Hollander book the Nemenyi test is in page 253 for to way layout data. Thank you for your help.
2010 Apr 22
2
Jonckheere-Terpstra test using coin package?
Is it possible to implement the Jonckheere-Terpstra test for ordered alternatives using the coin package: Conditional Inference Procedures in a Permutation Test Framework? I found jonckheere.test{clinfun}, but it uses a normal approximation when ties are present in the data. To make this concrete, I''ve include a small dataset. Thanks. --Dale Hollander and Wolfe, 1999 Table 6.6, pg
2009 Oct 14
4
post-hoc test with kruskal.test()
Dear R users, I would like to know if there is a way in R to execute a post-hoc test (factor levels comparison, like Tukey for ANOVA) of a non-parametric analysis of variance with kruskal.test() function. I am comparing three different groups. The preliminary analysis using the kruskal-wallis-test show significance, but I still don''t know the relationship and the significance level
2008 Mar 10
4
question for aov and kruskal
Hi R users! I have the following problem: how appropriate is my aov model under the violation of anova assumptions? Example: a<-c(1,1,1,1,1,1,1,1,1,1,2,2,2,3,3,3,3,3,3,3) b<-c(101,1010,200,300,400, 202, 121, 234, 55,555,66,76,88,34,239, 30, 40, 50,50,60) z<-data.frame(a, b) fligner.test(z$b, factor(z$a)) aov(z$b~factor(z$a))->ll TukeyHSD(ll) Now from the aov i found that my model
2007 Apr 10
4
When to use quasipoisson instead of poisson family
It seems that MASS suggest to judge on the basis of sum(residuals(mode,type="pearson"))/df.residual(mode). My question: Is there any rule of thumb of the cutpoiont value? The paper "On the Use of Corrections for Overdispersion" suggests overdispersion exists if the deviance is at least twice the number of degrees of freedom. Are there any further hints? Thanks. --
2009 Apr 20
0
New versions for the distr-family of packages
------------------------------------------------------------------------------- New versions released for the distr family of package ------------------------------------------------------------------------------- We would like to announce the availability on CRAN (with possibly a minor delay until on every mirror) of new versions of our packages in the "distr"-family (version 2.1),
2009 Apr 20
0
New versions for the distr-family of packages
------------------------------------------------------------------------------- New versions released for the distr family of package ------------------------------------------------------------------------------- We would like to announce the availability on CRAN (with possibly a minor delay until on every mirror) of new versions of our packages in the "distr"-family (version 2.1),
2003 Jan 30
1
Kruskal-Wallis, Friedman tests and Tukey HSD
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
2008 Feb 07
0
Kruskal-Wallis with binary data
Dear All, I need to compare 4 groups of binary data having different sample sizes and would like to know if the non parametric Kruskal-Wallis test (kruskal.test) can be used for this purpose or not. Many Thanks, GK
2011 Nov 15
0
Question regarding Kruskal-Wallis test
Hello, I need to analyse an experiment with 3 groups: Control group Treated group 1 (drug 1) Treated group 2 (drug 2) If I use a Kruskal-Wallis test do analyse the data and if I define the control group as the reference group does the test do then the following comparisons? Control group vs. Treated group 1 Control group vs. Treated group 2 Treated group 1 vs. Treated group 2 I am not sure
2008 Oct 22
1
Saving kruskal wallis p-values
Hi everyone, I am working on analyzing spectra which requires hundreds of kruskal wallis tests to be performed. Once significant results are found post tests are performed ect. My questions are: how do I perform all these kw tests and save just the pvalues in a table? Is there anyway to have R automatically perform post tests if a result of p<0.05 is found? Currently when I run the test
2004 May 25
1
Scheire-Ray-Hare extension to Kruskal-Wallis
Hi, I was wondering if it was possible to do the "Scheirer-Ray-Hare" extension of the Kruskal-Wallis test using R, or if it was possible to use some other non-parametric test for the following situation: I have continuous data that is grouped by 2 factor variables. I would like a non-parametric test because the group variances are not equal. I would like to look for the effects of
2012 Jun 11
1
Kruskal Wallis Post hoc
Hi, I have searched and found a response to a question similar to mine but when I tried the code, R says it''s not an actual function so I thought I''d ask here. http://r.789695.n4.nabble.com/file/n4633035/Cookies.csv Cookies.csv I have attached the data I am using. I am trying to look at two things: how moisture content changes over time, and how it changes