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From |
"Martin Weiss" <martin.weiss1@gmx.de> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
AW: st: AW: Correlation of Dummy and Metric Variables? |

Date |
Mon, 21 Sep 2009 17:28:02 +0200 |

<> ". First, the discussion / article is about correlation a continous and a discrete variable, I am wondering though how to deal with a dummy (0 / 1) variable (perhaps the same way?)." Is a dummy not a special case of a discrete variable? So the methods applicable to all discrete variables should be applicable to the dummy case as well... HTH Martin -----Ursprüngliche Nachricht----- Von: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Christian Weiß Gesendet: Montag, 21. September 2009 17:26 An: statalist@hsphsun2.harvard.edu Betreff: Re: st: AW: Correlation of Dummy and Metric Variables? Hi Martin, thx a lot, I already had a look at this discussion and Nick's article. Unfortunately, I can't find a clear answer to my question. First, the discussion / article is about correlation a continous and a discrete variable, I am wondering though how to deal with a dummy (0 / 1) variable (perhaps the same way?). Second, in his mail Nick says - if I understood him right - that the correlation between a discrete and continous variable can make sense, but that it depends (on what?). Still, I find it surprising that there is no comment / option in the correlate commands of Stata, as I figure that this is a frequently occuring issue (as Nick mentions). Afterall, I might be usual (and easiest way?) to exclude dummy variables from a correlation matrix?` Best Christian On Mon, Sep 21, 2009 at 10:51 AM, Martin Weiss <martin.weiss1@gmx.de> wrote: > > <> > > > > Try Nick`s http://www.stata.com/statalist/archive/2008-11/msg00933.html > > > > > HTH > Martin > > > -----Ursprüngliche Nachricht----- > Von: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Christian Weiß > Gesendet: Montag, 21. September 2009 16:45 > An: statalist > Betreff: st: Correlation of Dummy and Metric Variables? > > Dear Statalist, > > although it's not a particularly Stata specific question , I am hoping > to get advise on the following (basic?) question: > > > I am using the following command to get a correlation matrix > > quietly estpost correlate `vars', matrix > esttab using correlations.csv, not unstack compress noobs star(* > 0.10 > ** 0.05 *** 0.01) long b(%9.2f) replace > > `vars' containts a battery of mostly metric variables. Besides the > metric variables, there is also three dummy variables. > > I am wondering now if the reported (relatively high) correlation > coefficients among the dummy variables and between some of the metric > variables and the dummy variables are actually meaningful. How to > interpret them / which correlation test to use? > > > Thank's a lot, > Christian > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Correlation of Dummy and Metric Variables?***From:*Christian Weiß <mail@cweiss.org>

**Re: st: AW: Correlation of Dummy and Metric Variables?***From:*Christian Weiß <mail@cweiss.org>

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