Thanks for the information.
There was a discussion of different results obtained with the formula and
data.frame methods for a paired t-test -- there are many threads, but one is
at
http://r.789695.n4.nabble.com/Paired-t-tests-td2325956.html#a2326291
david freedman
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View this message in co
On 2010-11-29 06:35, David Freedman wrote:
Hi - I apologize for the 2nd post, but I think my question from a few weeks
ago may have been overlooked on a Friday afternoon.
I might be missing something very obvious, but is it widely known that the
aggregate function handles missing values differe
On Nov 29, 2010, at 9:35 AM, David Freedman wrote:
Hi - I apologize for the 2nd post, but I think my question from a
few weeks
ago may have been overlooked on a Friday afternoon.
I might be missing something very obvious, but is it widely known
that the
aggregate function handles missing
Hi - I apologize for the 2nd post, but I think my question from a few weeks
ago may have been overlooked on a Friday afternoon.
I might be missing something very obvious, but is it widely known that the
aggregate function handles missing values differently depending if a data
frame or a formula i
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