Re: Fisher's Exact Test / Freeman-Halton-Test

Posted by Rich Ulrich on Jun 02, 2012; 7:27pm
URL: http://spssx-discussion.165.s1.nabble.com/Fisher-s-Exact-Test-Freeman-Halton-Test-tp5713482p5713496.html

Your summary report says --
N of Valid Cases 18
whereas the count in the 2x3 table is 17.

So your statistics are not a report on the table shown.

--
Rich Ulrich

> Date: Sat, 2 Jun 2012 00:08:14 -0700

> From: [hidden email]
> Subject: Fisher's Exact Test / Freeman-Halton-Test
> To: [hidden email]
>
> I always thought, SPSS would compute "Fisher's Exact Test" equivilant to the
> Freeman-Halton-Test. But this doesn't seem to be so.
>
> Following data example:
>
> A B Sum
> 1 3 0 3
> 2 1 3 4
> 3 3 7 10
> Sum 7 10 17
>
>
> SPSS result: p=0,152
>
> -------------------------------------------------
> Chi-Square Tests
> Value df Asymp. Sig. (2-sided) Exact Sig. (2-sided) Exact Sig. (1-sided)
> Point Probability
> Pearson Chi-Square 4.635a 2 .099 .152
> Likelihood Ratio 5.783 2 .055 .152
> Fisher's Exact Test 4.194 .152
> Linear-by-Linear Association 3.602b 1 .058 .070 .055 .043
> N of Valid Cases 18
> a 5 cells (83.3%) have expected count less than 5. The minimum expected
> count is 1.33.
> b The standardized statistic is 1.898.
> -------------------------------------------------
>
> But the Freeman-Halton p-Value should be p(A) = p(B) = 0.07229535170711625
> according to:
>
> -> http://vassarstats.net/fisher2x3.html
>

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