[R-sig-teaching] prop.test in R

[Laura Chihara]

Yes, thank you for this reference. But according to
this article, the score is better than continuity
correction, so why is continuity correction the default
with prop.test?

-Laura

On 10/25/2010 4:02 PM, Ralph O'Brien, PhD wrote:
> I suggest:
>
> A. Agresti and B. A. Coull. Approximate is better than ”exact” for
> interval estimation of binomial proportions. The American Statistician,
> 52(2):119–126, 1998.
>
>
>
>
>
>
>
> On Mon, Oct 25, 2010 at 4:38 PM, Laura Chihara <lchihara at carleton.edu
> <mailto:lchihara at carleton.edu>> wrote:
>
>     Hi,
>
>     I have a question about prop.test in R:
>
>     I teach students the score confidence
>     interval for proportions (also called
>     Wilson or Wilson score interval).
>
>     prop.test(,..., correct=FALSE) gives this
>     interval.
>
>     The default uses a continuity correction.
>     When should we use one over the other?
>     Is it worth going over this in class? Why
>     is correct=TRUE the default?
>
>     Thanks for any pedagogical guidance here!
>
>     -- Laura
>
>     *******************************************
>     Laura Chihara
>     Professor of Mathematics   507-222-4065 (office)
>     Dept of Mathematics        507-222-4312 (fax)
>     Carleton College
>     1 North College Street
>     Northfield MN 55057
>
>     _______________________________________________
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>
>
>
>
> --
> Ralph O'Brien, PhD
> Professor, Dept of Epidemiology and Biostatistics
> Case Western Reserve University
> Office: 216.368.1927
> Cell: 216.312.3203

-- 
*******************************************
Laura Chihara
Professor of Mathematics   507-222-4065 (office)
Dept of Mathematics        507-222-4312 (fax)
Carleton College
1 North College Street
Northfield MN 55057