[R] t.test() on a list

Gang Chen gangchen6 at gmail.com
Thu Oct 2 23:25:23 CEST 2008

I appreciate your suggestion. The example I provided was fabricated
because I was only focusing on the programming perspective on how to
deal with such a data structure, not real statistical issues. Do you
mind elaborating a little more why that would not be appreciate? I
know I can do it with a couple of loops,  but I still appreciate
suggestions on how to write a line or two to run t-tests on such a
data structure.


On Thu, Oct 2, 2008 at 5:11 PM, Bert Gunter <gunter.berton at gene.com> wrote:
> I am sure you will get helpful answers. I am almost as sure that you
> shouldn't be doing this. I suggest you consult with your local statistician.
> -- Bert Gunter
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
> Behalf Of Gang Chen
> Sent: Thursday, October 02, 2008 11:24 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] t.test() on a list
> I have a list, myList, with each of its 9 components being a 15X15
> matrix. I want to run a t-test across the list for each component in
> the matrix. For example, the first t-test is on myList[[1]][1, 1],
> myList[[2]][1, 1], ..., myList[[9]][1, 1]; and there are totally 15X15
> t-tests. How can I run these t-tests in a simple way?
> TIA,
> Gang

More information about the R-help mailing list