From: Marc Schwartz <MSchwartz_at_medanalytics.com>

Date: Mon 21 Mar 2005 - 08:22:09 EST

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Mon Mar 21 08:27:59 2005

Date: Mon 21 Mar 2005 - 08:22:09 EST

On Sun, 2005-03-20 at 15:44 -0500, Liaw, Andy wrote:

> I'd suggest a $\times$ b, as you'd find in most stat textbook.

*>
**> Andy
**>
**> > From: Witold Eryk Wolski
**> >
**> > Dear Rgurus,
**> >
**> > Interaction terms in the linear models function lm are
**> > specified by the
**> > colon :
**> > eg: x ~ a + b + a:b
**> >
**> > a shortcut for the above is:
**> > x ~ a*b
**> >
**> > the output if calling anova on the lm object will be the same
**> > in both cases
**> >
**> > a ....
**> > b ....
**> > a:b ...
**> > Resdiuals ...
**> >
**> > What I am wondering is how the interaction term (a:b) given
**> > above should
**> > be written in a table in an manuscript?
**> >
**> > a ) a*b
**> > b ) a$\cdot$ b
**> > c ) a:b
**> > d) ....
**> >
**> > Cheers Eryk.
**> >
*

R-help@stat.math.ethz.ch mailing list

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Mon Mar 21 08:27:59 2005

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