[R] fisher exact for > 2x2 table

Jeremy Miles jeremy.miles at gmail.com
Fri Apr 29 23:21:51 CEST 2011

On 29 April 2011 08:43, viostorm <rob.schutt at gmail.com> wrote:
> After I shared comments form the forum yesterday with the biostatistician he
> indicated this:
> "Fisher's exact test is the non-parametric analog for the Chi-square
> test for 2x2 comparisons. A version (or extension) of the Fisher's Exact
> test, known as the Freeman-Halton test applies to comparisons for tables
> greater than 2x2. SAS can calculate both statistics using the following
> instructions.
>  proc freq; tables a * b / fisher;"

SAS documentation says:

"Fisher's exact test was extended to general R×C tables by Freeman and
Halton (1951), and this test is *also* known as the Freeman-Halton

Emphasis mine.


Jeremy Miles
Psychology Research Methods Wiki: www.researchmethodsinpsychology.com

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