Thank you. Can the chi-squared test compare two matrices that are not the
same size, eg if matrix 1 is a 2 X 4 table, and matrix 2 is a 3 X 5 matrix?


On Fri, Mar 9, 2012 at 4:37 PM, Greg Snow <538280@gmail.com> wrote:

> The chi-squared test is one option (and seems reasonable to me if it
> the the proportions/patterns that you want to test).  One way to do
> the test is to combine your 2 matrices into a 3 dimensional array (the
> abind package may help here) and test using the loglin function.
>
> On Thu, Mar 8, 2012 at 5:46 AM, aaral singh <aaral.singh@gmail.com> wrote:
> > Hi.Please help if someone can.
> >
> > Problem:
> > I have 2 matrices
> >
> > Eg
> >
> > matrix 1:
> >                Freq  None  Some
> >  Heavy    3        2          5
> >  Never    8       13         8
> >  Occas    1        4          4
> >  Regul     9        5         7
> >
> > matrix 2:
> >                  Freq     None     Some
> >  Heavy        7          1             3
> >  Never      87         18          84
> >  Occas      12           3            4
> >  Regul        9            1            7
> >
> >
> > I want to see if matrix 1 is significantly different from matrix 2. I
> > consider using a chi-squared test. Is this appropriate?
> > Could anyone advise?
> > Many thank you.
> > Aaral Singh
> >
> > --
> > View this message in context:
> http://r.789695.n4.nabble.com/help-please-2-tables-which-test-tp4456312p4456312.html
> > Sent from the R help mailing list archive at Nabble.com.
> >
> > ______________________________________________
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> > and provide commented, minimal, self-contained, reproducible code.
>
>
>
> --
> Gregory (Greg) L. Snow Ph.D.
> 538280@gmail.com
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

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