Re: [R] Complex multiple t tests in a data frame with several id factors

2011-12-04 Thread Kaiyin Zhong
Okay, thank you. On Mon, Dec 5, 2011 at 12:01 AM, Bert Gunter wrote: > The concentrations of the different metals within an animal are > correlated, so that doing as you suggest will almost certainly result > in nonsense P values. So I suggest you seek local statistical help or, > failing that, p

Re: [R] Complex multiple t tests in a data frame with several id factors

2011-12-04 Thread Bert Gunter
The concentrations of the different metals within an animal are correlated, so that doing as you suggest will almost certainly result in nonsense P values. So I suggest you seek local statistical help or, failing that, post on a statistical forum like stats.stackexchange.com . There are various