[R] ANOVA with replicate measures

Hi, I have the following dataset (shown only part of it): WFPSsampling dayslurry depth replicates N2O (mg/m2/h) 1 1 1 3 1 0.007 1 1 1 3 2 0.022 1 1 1 3 3 0.015 1 1 2 3

[R] permutation test assumption?

Dear all, Can I do a permutation test if the number of individuals in one group is much bigger than in the other group? I searched the literature but I didin´t find any assumption that refers to this subject for permutation tests. Best regards João Fadista Ph.d. student

Re: [R] permutation test assumption?

Dear Thierry, Thanks for the reply. But as you may read in the paper http://bioinformatics.oxfordjournals.org/cgi/content/abstract/22/18/2244 when the sample sizes are not the same there may be an increase in the Type I error rate. Comments will be appreciated. Best regards, João Fadista

Re: [R] permutation test assumption?

De: Achim Zeileis [mailto:[EMAIL PROTECTED] Enviada: qua 09-04-2008 0:26 Para: João Fadista Cc: ONKELINX, Thierry; r-help@r-project.org Assunto: Re: [R] permutation test assumption? On Wed, 9 Apr 2008, João Fadista wrote: Dear Thierry, Thanks for the reply. But as you may read

[R] wilcox.test test statistic

Dear all, When we perform a Wilcoxon rank sum test (on two samples with different sizes) we get a test statistic. My question is, as the value of test statistic increases the difference between the distributions of the two samples also increase, right? Thanks in advance, João Fadista

[R] chisq.test in batch

for given probabilities data: c(242, 281) X-squared = 2.9082, df = 1, p-value = 0.08813 Desired output: Test 1 2 ... 200 p-value 0.3511 0.06896 ... 0.08813 Thanks in advance. Best regards, João Fadista __ R

[R] subsetting a data.frame

, for the above example I would like to have a new data.frame that has only the best Score for each Name: Score Name 88 19_0070 88 19_0070 79 002127_0658 79 002127_0658 Thanks in advance. Best regards, João Fadista

[R] read only certain parts of a file

Bases identity 89 19_0070 Chr15 3 108 43251883 43251778 C 106 95.28 88 19_0070 Chr1 4 108 85826948 85826844 C 105 95.24 99 24_1262 Chr6 16 124 35738256 35738364 F 109 100.00 Best regards, João Fadista [[alternative HTML version deleted

[R] Barnard's exact test

Dear all, I would like to know if there is any R package that has the Barnard´s exact test. I also like to have any opinions about which test is more powerful: Fisher´s exact test or Barnard´s exact test. Best regards João Fadista Ph.d. student UNIVERSITY OF AARHUS