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st: Correlation of Dummy and Metric Variables?

From   Christian Weiß <[email protected]>
To   statalist <[email protected]>
Subject   st: Correlation of Dummy and Metric Variables?
Date   Mon, 21 Sep 2009 10:45:14 -0400

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,
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