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st: Question about generating the weight of WLS

Subject   st: Question about generating the weight of WLS
Date   Thu, 25 Apr 2013 06:37:18 -0400

Hi everybody
- I have stata IC 10

-I have a panel data. To take in to consideration the considerable variation of the MFIs (microfinance institutions) across countries on the empirical results, I resort to a weighted least squares with the weight being the inverse of the number of MFIs for the country in the database in a given year.

Can someone help me on how to generate the inverse of the number of MFIs for the country in the database in a given year and how to handle this WLS. Please find below an example of the data
Thanks for your time and consideration

year        mfi        country
2004        AFS        Afghanistan
2004        BRAC - AFG        Afghanistan
2004        FINCA - AFG        Afghanistan
2004        FMFB - AFG        Afghanistan
2005        AFS                 Afghanistan
2005        BRAC - AFG        Afghanistan
2005        CFA                 Afghanistan
2005        FINCA - AFG        Afghanistan
2005        FMFB - AFG        Afghanistan
2005        MADRAC                 Afghanistan
2004        ASC Union         Albania
2004        BESA                  Albania
2004        FAF-DC                  Albania
2004        NOA - ALB         Albania
2005        ASC Union         Albania
2005        BESA                  Albania
2005        FAF-DC                 Albania
2005        NOA -   ALB        Albania
2004        BMM C?rdoba        Argentina
2004        Emprenda                 Argentina
2004        Entre Todos        Argentina
2004        FIE Gran Poder        Argentina
2004        Grameen Chaco        Argentina
2005        Alternativa 3        Argentina
2005        BMM C??rdoba        Argentina
2005        Emprenda                 Argentina
2005        Entre Todos        Argentina
2005        FIE Gran Poder        Argentina
2005        Grameen Chaco        Argentina

Ayi Gavriel Ayayi; Ph.D.
Professor of Financial Economics
Editors of AEFR, AFJ, EFR and IJEMS
Département des Sciences de la Gestion
Université du Québec
3351 Boulevard des Forges C.P 500
Trois Rivières, Québec, G9A 5H7 Canada
Some of my recent papers at:
Tel: (1) 819 376-5011 ext 3137

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