Posted by
Anthony Babinec on
Jun 02, 2012; 2:17pm
URL: http://spssx-discussion.165.s1.nabble.com/Fisher-s-Exact-Test-Freeman-Halton-Test-tp5713482p5713487.html
What version are you running?
Here is what SPSS 20 produces when you use the Exact button:
Chi-Square Tests
Value df Asymp. Sig. (2-sided) Exact Sig. (2-sided)
Exact Sig. (1-sided) Point Probability
Pearson Chi-Square 5.234a 2 .073 .072
Likelihood Ratio 6.319 2 .042 .072
Fisher's Exact Test 4.609 .072
Linear-by-Linear Association 3.191b 1 .074 .119 .070 .052
N of Valid Cases 17
a 5 cells (83.3%) have expected count less than 5. The minimum expected
count is 1.24.
b The standardized statistic is 1.786.
The "gold standard" would be to run in statxact but I don't have it on my
machine.
Tony Babinec
[hidden email]
-----Original Message-----
From: SPSSX(r) Discussion [mailto:
[hidden email]] On Behalf Of
drfg2008
Sent: Saturday, June 02, 2012 2:08 AM
To:
[hidden email]
Subject: Fisher's Exact Test / Freeman-Halton-Test
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-----
Dr. Frank Gaeth
FU-Berlin
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