prop.test in R

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

-- 
*******************************************
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