On Fri, 07 Dec 2001 04:59:46 GMT, Richard J Burke
<[EMAIL PROTECTED]> wrote:
> jenny wrote:
>
> > What should I do with the missing values in my data. I ned to perform
> > a t test of two samples to test the mean difference between them.
> >
> > How should I handle them in S-Plus or SAS?
> >
> >
jenny wrote:
> What should I do with the missing values in my data. I ned to perform
> a t test of two samples to test the mean difference between them.
>
> How should I handle them in S-Plus or SAS?
>
> Thanks.
> JJ
If you are doing paired tests, then the pairs with missing values will
have
Jerry Dallal <[EMAIL PROTECTED]> wrote in message
news:<[EMAIL PROTECTED]>...
> Rich Ulrich wrote:
> >
> > On Mon, 03 Dec 2001 20:57:33 GMT, Jerry Dallal
> > <[EMAIL PROTECTED]> wrote:
>
> > > This is a bit different, though. The criticisms of stepwise
> > > selection are directed toward the
On Tue, 04 Dec 2001 17:39:53 GMT, Jerry Dallal
<[EMAIL PROTECTED]> wrote:
> Rich Ulrich wrote:
> >
[ ... ]
> > I don't see much difference. "Identifying predictors" by regression
> > analyses -- what is that advice supposed to mean? The criticisms
> > of stepwise selection say that it gives
On Mon, 03 Dec 2001 20:57:33 GMT, Jerry Dallal
<[EMAIL PROTECTED]> wrote:
> Rich Ulrich wrote:
> >
> > On 2 Dec 2001 16:49:25 -0800, [EMAIL PROTECTED] (Kevin C. Heslin)
> > wrote:
> >
> > > Jenny -- here's a way to impute continuous variables using SAS:
> > >
> > > Regression analysis is perfor
Rich Ulrich wrote:
>
> On Mon, 03 Dec 2001 20:57:33 GMT, Jerry Dallal
> <[EMAIL PROTECTED]> wrote:
> > This is a bit different, though. The criticisms of stepwise
> > selection are directed toward the attempt to assess the contribution
> > of individual predictors. The predictions themselves s
Rich Ulrich wrote:
>
> On 2 Dec 2001 16:49:25 -0800, [EMAIL PROTECTED] (Kevin C. Heslin)
> wrote:
>
> > Jenny -- here's a way to impute continuous variables using SAS:
> >
> > Regression analysis is performed on a continuous variable until significant
> > predictors of the continuous variable ar
On 2 Dec 2001 16:49:25 -0800, [EMAIL PROTECTED] (Kevin C. Heslin)
wrote:
> Jenny -- here's a way to impute continuous variables using SAS:
>
> Regression analysis is performed on a continuous variable until significant
> predictors of the continuous variable are identified. The parameter estima
[EMAIL PROTECTED] (jenny) wrote in message
news:<[EMAIL PROTECTED]>...
> What should I do with the missing values in my data. I ned to perform
> a t test of two samples to test the mean difference between them.
>
> How should I handle them in S-Plus or SAS?
It depends on whether the thing that
Jenny -- here's a way to impute continuous variables using SAS:
Regression analysis is performed on a
continuous variable until significant predictors of the continuous
variable are identified. The parameter estimates for the
significant independent predictor variables from the final regression
On 1 Dec 2001, jenny wrote:
> What should I do with the missing values in my data. I need to
> perform a t test of two samples to test the mean difference between
> them.
> How should I handle them in S-Plus or SAS?
1. What do S-Plus and/or SAS do with missing values by default?
(All
What should I do with the missing values in my data. I ned to perform
a t test of two samples to test the mean difference between them.
How should I handle them in S-Plus or SAS?
Thanks.
JJ
=
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