[R] help please. 2 tables, which test?

Greg Snow 538280 at gmail.com
Fri Mar 9 17:37:46 CET 2012


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 at 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
>
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-- 
Gregory (Greg) L. Snow Ph.D.
538280 at gmail.com



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