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Table 2. 
Descriptive Statistics
VariableAcronymObs.MeanStd. Dev.Min.Max.
Services Trade Agreement Membership 
STA membership status between i and  j in 2015 (end-August) STAij 103 0.136 0.344 0.000 1.000 
Unilateral Services Trade Restrictiveness 
Log sum of STRI of i and  j SREGij 103 7.165 0.554 5.757 8.165 
Absolute difference in log STRI of i and  j DREGij 103 0.464 0.358 0.013 1.568 
Absolute and Relative Endowment and Trade Variables (avg 1979–1981) 
Log sum of GDP of i and  j SRGDPij 76 48.880 2.551 42.643 54.625 
Absolute difference in log GDP of i and  j DRGDPij 76 2.218 1.649 0.016 7.626 
Absolute difference in log GDP per capita of i and  j DKLij 76 1.431 1.184 0.004 4.734 
Squared absolute difference in log GDP per capita of i and  j SQDKLij 76 3.431 5.228 0.000 22.411 
Absolute difference in log GDP per capita of i plus  j with the rest of the world DROWKLij 76 2.135 0.618 0.513 3.355 
Log average bilateral goods trade between i and  j BTGij 68 16.477 2.793 8.375 22.587 
Absolute and Relative Endowment and Trade Variables (avg 1989–1991) 
Log sum of GDP of i and  j SRGDPij 89 49.799 2.607 43.491 55.983 
Absolute difference in log GDP of i and  j DRGDPij 89 2.298 1.636 0.016 7.654 
Absolute difference in log GDP per capita of i and  j DKLij 89 1.473 1.271 0.005 4.917 
Squared absolute difference in log GDP per capita of i and  j SQDKLij 89 3.766 5.696 0.000 24.174 
Absolute difference in log GDP per capita of i plus  j with the rest of the world DROWKLij 89 2.093 0.563 0.519 3.110 
Log average bilateral goods trade between i and  j BTGij 83 17.656 2.630 9.628 23.442 
Absolute and Relative Endowment and Trade Variables (avg 1999–2001) 
Log sum of GDP of i and  j SRGDPij 103 50.312 2.839 43.457 57.072 
Absolute difference in log GDP of i and  j DRGDPij 103 2.524 1.740 0.039 7.744 
Absolute difference in log GDP per capita of i and  j DKLij 103 1.459 1.274 0.016 4.761 
Squared absolute difference in log GDP per capita of i and  j SQDKLij 103 3.738 5.489 0.000 22.664 
Absolute difference in log GDP per capita of i plus  j with the rest of the world DROWKLij 103 2.026 0.518 0.581 3.068 
Log average bilateral goods trade between i and  j BTGij 103 17.920 3.375 8.922 24.404 
Geographical and Cultural Distance 
Log bilateral distance between i and  j DISTij 103 7.952 0.543 6.284 8.834 
Common legal system between i and  j COMLAWij 103 0.291 0.457 0.000 1.000 
Common language between i and  j COMLANGij 103 0.087 0.284 0.000 1.000 
Colonial relationship between i and  j COLONYij 103 0.019 0.139 0.000 1.000 
Common colonizer between i and  j COMCOLij 103 0.107 0.310 0.000 1.000 
Units i and  j belonged to the same country SAMECTRYij 103 0.049 0.216 0.000 1.000 
VariableAcronymObs.MeanStd. Dev.Min.Max.
Services Trade Agreement Membership 
STA membership status between i and  j in 2015 (end-August) STAij 103 0.136 0.344 0.000 1.000 
Unilateral Services Trade Restrictiveness 
Log sum of STRI of i and  j SREGij 103 7.165 0.554 5.757 8.165 
Absolute difference in log STRI of i and  j DREGij 103 0.464 0.358 0.013 1.568 
Absolute and Relative Endowment and Trade Variables (avg 1979–1981) 
Log sum of GDP of i and  j SRGDPij 76 48.880 2.551 42.643 54.625 
Absolute difference in log GDP of i and  j DRGDPij 76 2.218 1.649 0.016 7.626 
Absolute difference in log GDP per capita of i and  j DKLij 76 1.431 1.184 0.004 4.734 
Squared absolute difference in log GDP per capita of i and  j SQDKLij 76 3.431 5.228 0.000 22.411 
Absolute difference in log GDP per capita of i plus  j with the rest of the world DROWKLij 76 2.135 0.618 0.513 3.355 
Log average bilateral goods trade between i and  j BTGij 68 16.477 2.793 8.375 22.587 
Absolute and Relative Endowment and Trade Variables (avg 1989–1991) 
Log sum of GDP of i and  j SRGDPij 89 49.799 2.607 43.491 55.983 
Absolute difference in log GDP of i and  j DRGDPij 89 2.298 1.636 0.016 7.654 
Absolute difference in log GDP per capita of i and  j DKLij 89 1.473 1.271 0.005 4.917 
Squared absolute difference in log GDP per capita of i and  j SQDKLij 89 3.766 5.696 0.000 24.174 
Absolute difference in log GDP per capita of i plus  j with the rest of the world DROWKLij 89 2.093 0.563 0.519 3.110 
Log average bilateral goods trade between i and  j BTGij 83 17.656 2.630 9.628 23.442 
Absolute and Relative Endowment and Trade Variables (avg 1999–2001) 
Log sum of GDP of i and  j SRGDPij 103 50.312 2.839 43.457 57.072 
Absolute difference in log GDP of i and  j DRGDPij 103 2.524 1.740 0.039 7.744 
Absolute difference in log GDP per capita of i and  j DKLij 103 1.459 1.274 0.016 4.761 
Squared absolute difference in log GDP per capita of i and  j SQDKLij 103 3.738 5.489 0.000 22.664 
Absolute difference in log GDP per capita of i plus  j with the rest of the world DROWKLij 103 2.026 0.518 0.581 3.068 
Log average bilateral goods trade between i and  j BTGij 103 17.920 3.375 8.922 24.404 
Geographical and Cultural Distance 
Log bilateral distance between i and  j DISTij 103 7.952 0.543 6.284 8.834 
Common legal system between i and  j COMLAWij 103 0.291 0.457 0.000 1.000 
Common language between i and  j COMLANGij 103 0.087 0.284 0.000 1.000 
Colonial relationship between i and  j COLONYij 103 0.019 0.139 0.000 1.000 
Common colonizer between i and  j COMCOLij 103 0.107 0.310 0.000 1.000 
Units i and  j belonged to the same country SAMECTRYij 103 0.049 0.216 0.000 1.000 

GDP = gross domestic product, STA = services trade agreement, STRI = Services Trade Restrictiveness Index.

Sources: World Trade Organization. Regional Trade Agreements Information System. http://rtais.wto.org/UI/ PublicMaintainRTAHome.aspx; Borchert, Gootiiz, and Mattoo 2012; World Bank. World Development Indicators. http://data.worldbank.org/data-catalog/world-development-indicators; United Nations. UN Commodity Trade Statistics Database. http://comtrade.un.org/; Head, Mayer, and Ries 2010; La Porta et al. 1999.

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