Hi all,
After my reply on R-Help to the relevant thread, I noted what appear to be a
couple of typos in the Details section of ?pairwise.t.test. Note text with '**'.
Current text:
The **pool.SD** switch calculates a common SD for all groups and **used** that
for all comparisons (this can be useful if some groups are small). This method
does not actually call t.test, so extra arguments are ignored. Pooling does not
generalize to paired tests so **pool.SD** and paired cannot both be TRUE.
Proposed new text:
The **pool.sd** switch calculates a common SD for all groups and **uses** that
for all comparisons (this can be useful if some groups are small). This method
does not actually call t.test, so extra arguments are ignored. Pooling does not
generalize to paired tests so **pool.sd** and paired cannot both be TRUE.
If that is acceptable, a text file with a patch against the main svn trunk
version of pairwise.t.test.Rd is attached.
Regards,
Marc Schwartz
--- pairwise.t.test.Rd 2008-04-06 10:46:45.000000000 -0500
+++ pairwise.t.test.Rd.NEW 2010-09-10 10:16:53.000000000 -0500
@@ -27,11 +27,11 @@
\code{"greater"} or \code{"less"}. }
\item{\dots}{ additional arguments to pass to \code{t.test}. }
}
-\details{ The \code{pool.SD} switch calculates a common SD for all
- groups and used that for all comparisons (this can be useful if some
+\details{ The \code{pool.sd} switch calculates a common SD for all
+ groups and uses that for all comparisons (this can be useful if some
groups are small). This method does not actually call \code{t.test},
so extra arguments are ignored. Pooling does not generalize to paired tests
- so \code{pool.SD} and \code{paired} cannot both be \code{TRUE}.
+ so \code{pool.sd} and \code{paired} cannot both be \code{TRUE}.
Only the lower triangle of the matrix of possible comparisons is being
calculated, so setting \code{alternative} to anything other than
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