st: Two Stata questions

["Krishna R. Kumar" <kkumar@gwu.edu>]

I am new to Stata.  I have two questions.

The first relates to data management.  I would like to create categorical 
variables by partitioning a continuous variable into two or more equal size 
groups, i.e. groups with equal number of observations.  In SAS, PROC RANKS 
does this quite easily with the "groups" option.  Is there a way to do such 
a transformation with Stata.  "autocode" partitions at pre-set cut-offs but 
that would require figuring out the median first and then inserting it as a 
cutoff into "autocode."

The second relates to the "cluster" option of the "regress" command.  This 
produces Huber-White t-stats.  A by-product is that the log does not 
include an adjusted R-square.  Can someone tell me why?  Also, is there 
anything wrong with obtaining the adjusted R-square by running "regress" 
without the "cluster" option and reporting it alongside the Huber-White 
t-statistics?

Thanks in advance.

Krishna Kumar

Krishna R. Kumar, Ph. D.
Professor of Accountancy
School of Business GOV 406
The George Washington University
Washington DC 20052
Ph (202) 994-5976
Fax (202) 994-5164 
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