Re: [R] Power of t test for unequal variances?

>> On Dec 19, 2016, at 1:47 PM, Mauricio Cornejo via R-help >> wrote: >> >> Is there a function similar to stats::power.t.test that can handle unequal >> variances from two samples? >> I noticed that stats::t.test has an argument for indicating whether or

Re: [R] Power of t test for unequal variances?

  --  Gerrit > On Dec 19, 2016, at 1:47 PM, Mauricio Cornejo via R-help > wrote: > > Is there a function similar to stats::power.t.test that can handle unequal > variances from two samples? > I noticed that stats::t.test has an argument for indicating whether or not to >

[R] Power of t test for unequal variances?

Is there a function similar to stats::power.t.test that can handle unequal variances from two samples? I noticed that stats::t.test has an argument for indicating whether or not to treat the two sample variances as equal.  Wondering why stats::power.t.test doesn’t have that option. Thanks,Mauric

[R] Why does R start in wrong working directory despite R_USER setting?

Hi After launching newly-installed R 3.2.1 (on Windows 7), I run the following two commands: > getwd()[1] "C:/ProgramData/Microsoft/Windows/Start Menu/Programs/R" > Sys.getenv('R_USER')[1] "C:\\UsersDocuments" I would like the startup working directory to be that pointed to by R_USER. I don't