Re: st: SFA - variance parameter

[David Kantor <dkantor@jhu.edu>]

At 07:04 AM 5/4/2004 -0500, Scott Merryman wrote, in response to a question 
from Erik Brouwer,


> I believe theta = sqrt(1/(sigma_u)^2)
I don't know anything about stochastic frontier analysis, but isn't that 
the same as

abs(1/(sigma_u))  ?


David Kantor
Institute for Policy Studies
Johns Hopkins University
dkantor@jhu.edu
410-516-5404

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/