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Re: st: storage type problem


From   "Erik Ø. Sørensen" <sameos@mac.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: storage type problem
Date   Fri, 28 Feb 2003 11:10:16 -0500

On fredag, feb 28, 2003, at 10:44 Canada/Eastern, Kostova Deliana (HXX1DAK) wrote:

Suppose we want to calculate the product of -.1796042 and 4.752947, so we
type:
display -.1796042^4.752947
and we get
-.00028563
this produces - ( .1796^0.475), not (-.179)^4.75 (whatever that would mean). The product (if you want it) would be written with a "*" not a "^".


However, if we have variable X= -.1796042 and variable Y=4.752947, and we
type
gen Z=X*Y, Stata will generate Z=. even though Z should be -.00028563.
I think you are mixing some things here. X*Y should work well (and be -.85), but X^Y (which you indicate above) will not work since negative numbers raised to non-integers will not work (for good mathematical reasons, this has nothing to do with the storage types).

Kind regards,
Erik
--
Erik Ø. Sørensen, <http://www.geocities.com/erik_oiolf/>.
phd student (economics), Norwegian School of Economics.
currently visiting Queen's University, Kingston, Ontario.

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