[R] Yates correction

[Jomy Jose]

 I tried to do chi square test for the following observed frequencies
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   A  B
A  8  4
B 12 10

R gave the following output:
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        Pearson's Chi-squared test with Yates' continuity correction

data:  M
X-squared = 0.10349, df = 1, p-value = 0.7477

Warning message:
In chisq.test(M) : Chi-squared approximation may be incorrect

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Whether this result can be relied or we have to use Fishers exact test ?

Jose

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