[R] confidence interval given by prop.test()

[Uwe Ligges]

On Mon, 24 Sep 2001 mai at ms.uky.edu wrote:

> I think the confidence
> interval are those values of the parameter that have a large
> P-value, so independent of the specific null hypothesis
> that we are testing.  i.e. we can construct a conf. int. from
> data without doing a test. The fact that we (later) also
> want a test should not change the calculation of the 
> confidence interval.
> 

OK. You are so right! It's too late to work!

It happens because Yates' continuity correction is used, which
can be turned off:
 prop.test(..., correct=FALSE)
 
[BTW: The same in S-Plus]

Uwe Ligges

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