[R] Getting all possible contingency tables

[John Kane]

Are you basically asking for all possible permutations of the table?  If so see ?permn in the combinat package.

John Kane
Kingston ON Canada


> -----Original Message-----
> From: bogaso.christofer at gmail.com
> Sent: Sat, 01 Dec 2012 18:10:15 +0545
> To: r-help at r-project.org
> Subject: [R] Getting all possible contingency tables
> 
> Hello all,
> 
> Let say I have 2-way contingency table:
> 
> Tab <- matrix(c(8, 10, 12, 6), nr = 2)
> 
> and the Chi-squared test could not reject the independence:
> 
>  > chisq.test(Tab)
> 
>          Pearson's Chi-squared test with Yates' continuity correction
> 
> data:  Tab
> X-squared = 1.0125, df = 1, p-value = 0.3143
> 
> 
> However I want to get all possible contingency tables under this
> independence scenario (one of them would obviously be the given table
> as, we could not reject the independence), and for each such table I
> want to calculate the Ch-sq statistic.
> 
> Can somebody help me how to generate all such tables?
> 
> Thanks and regards,
> 
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