Re: [R] TukeyHSD for multiple response

2018-05-28 Thread Sergio Ferreira Cardoso
Michael, Thank you very much for your answer. I finally tried lsmeans to compare what I wanted. I'll follow your advice and explore the CDA. It's probably a better solution to assess what I want. Best, Sérgio. - Mensagem original - > De: "Michael Friendly" > Para:

Re: [R] TukeyHSD for multiple response

2018-05-26 Thread Michael Friendly
Hi Sergio Doing those tests 30 times is going to give you a huge Type I error rate, even if there was a function that did that. There is a reason why TukeyHSD doesn't make it easy. In general, if there are useful comparisons among the species, you are better off setting up and testing

[R] TukeyHSD for multiple response

2018-05-25 Thread Sergio Ferreira Cardoso
Dear all, I'm testing the effect of species and sex in my sample by using the principal component scores of a PCA analysis. I have 30 PCs and I tried to see if there is any significant difference from males to females, given that there is a significant effect of phylogeny (factor with