Log of dummies variables I am having a bunch of dummies variables and some of them when trying to get the scatter plots they are collapsed on the horizontal line. It is hard to see any relation. I know from theory they should show some correlation with the key variables. Winsorizing did not help much. Is it correct to get the log of the dummies only for those specific dummies? What do you people think on this? 
I attach an image from stata
A dummy variable is a binary variable, that does need to be logged. You can use them as they are. Also, if the variable is set to 1 for a given result and zero otherwise, by taking logs you will turn your variable to 0 and a missing value because the log of 0 does not exist.



update: Instead of a plot, why not simply calculate pairwise correlation coefficients. Here is an example using Stata

. sysuse auto, clear
(1978 Automobile Data)

. * Create a dummy variable
. gen byte big= weight&gt;3020

. ta big

        big |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         35       47.30       47.30
          1 |         39       52.70      100.00
------------+-----------------------------------
      Total |         74      100.00

. * Correlate big with price
. pwcorr big price

             |      big    price
-------------+------------------
         big |   1.0000 
       price |   0.3469   1.0000 

Both are positively correlated.

. * Add a other dummy and compute new correlations


    pwcorr price foreign big

             |    price  foreign      big
-------------+---------------------------
       price |   1.0000 
     foreign |   0.0487   1.0000 
         big |   0.3469  -0.5682   1.0000