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From | "west--\@libero\.it" <west--@libero.it> |
To | "statalist" <statalist@hsphsun2.harvard.edu> |
Subject | st: summation (+ absolute value) formula |
Date | Tue, 7 Nov 2006 22:21:58 +0100 |
I need some help, thank you in advance. Given a variable (taken from a set of n variables in a panel), called "Pippo", I need to compute the following formula: Somma_(i=t-2 to t) of Absolute_value[(Pippo(i) - Pippo(i-1))/Pippo(i-1)] ATB, D. * * 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/
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