[R-sig-teaching] Cronbach's Alpha Values

[Jeff Laux]

What does this have to do with discussions of the use of R in teaching
statistics?  This should go to the main r-help listserv, not this SIG.
Also, when you post this there, you should include some data for people to
run.  Please stop posting general R questions to this SIG.


On Tue, Feb 21, 2017 at 9:54 AM, Steven Stoline <sstoline at gmail.com> wrote:

> Dear All:
>
>
> I am using *alpha(data, **check.keys=TRUE) *to compute the Cronbach's
> Alpha. I am using  *check.keys=TRUE*  to automatically reverse items.
>
>
> *My question is: *how can I get the correlation tables (matrix) of the
> reversed items as part of the R output.
>
>
>
> thank you
> steve
>
> On Thu, Feb 9, 2017 at 1:37 PM, Jeremy Miles <jeremy.miles at gmail.com>
> wrote:
>
> >
> > Almost always that you've made a mistake and haven't reversed some items
> > that should have been reversed. (Some software will do that
> automatically).
> >
> > Use check.keys=TRUE, and the alpha function (in the psych package) will
> > automatically reverse items if that needs to be done.
> >
> > J
> >
> > On Thu, 9 Feb 2017 at 09:58 Steven Stoline <sstoline at gmail.com> wrote:
> >
> >> Dear All:
> >>
> >>
> >> how to interpret the negative values of Cronbach's Alpha.
> >>
> >> *e.g.*,  alpha  = -0.229974  ,  alpha   = -0.172835
> >>
> >>
> >> thank you very much for your help.
> >>
> >>
> >> with thanks
> >> steve
> >>
> >> --
> >> Steven M. Stoline
> >> sstoline at gmail.com
> >>
> >>         [[alternative HTML version deleted]]
> >>
> >> _______________________________________________
> >> R-sig-teaching at r-project.org mailing list
> >> https://stat.ethz.ch/mailman/listinfo/r-sig-teaching
> >>
> >
>
>
> --
> Steven M. Stoline
> sstoline at gmail.com
>
>         [[alternative HTML version deleted]]
>
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