Date: Wed, 5 Jul 2006 12:20:31 -0400
Reply-To: Peter Flom <Flom@NDRI.ORG>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: Peter Flom <Flom@NDRI.ORG>
Subject: Re: A LOGISTIC REGRESSION question
Content-Type: text/plain; charset=US-ASCII
I don't see a reason to cut your sample size
>>> Ganesh bala <ganeshkumar77@YAHOO.COM> 7/5/2006 10:41 am >>>
I plan to build a logistic model to predict response. My dataset
500K observations :
Since I have a disproportional sample of responders vs. non_responders,
am thinking that I should be taking a 1:4 split between them
Is this correct? Also, should I follow any other procedures (offset??)
while doing so?
Any ideas would be much appreciated.