A Note on the Application of EC2SLS and EC3SLS Estimators in Panel Data Models
AbstractBaltagi and Li (1992) showed that for estimating a single equation in a simultaneous panel data model, EC2SLS has more instruments than G2SLS. Although these extra instruments are redundant in White (1986) terminology, they may yield different estimates and standard errors in empirical studies with finite N and T. We illustrte this using the crime data of Cornwell and Trumbull (1994). We show that the standard errors of EC2SLS are smaller than those of G2SLS for this example. In general, we prove that the asymptotic variance of G2SLS differs from that of EC2SLS by a positive semi-definite matrix. Although this difference tends to zero as the sample size tends to infinity, in small samples, this difference may be different from zero and can lead to gains in small sample efficiency. This proof is extended to the system equations 3SLS counterparts.
Download InfoIf you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
Bibliographic InfoPaper provided by Center for Policy Research, Maxwell School, Syracuse University in its series Center for Policy Research Working Papers with number 116.
Length: 9 pages
Date of creation: Jul 2009
Date of revision:
Contact details of provider:
Postal: 426 Eggers Hall, Syracuse, New York USA 13244-1020
Phone: (315) 443-3114
Fax: (315) 443-1081
Web page: http://www.maxwell.syr.edu/cpr.aspx
More information through EDIRC
Instrument variable; panel data;
Other versions of this item:
- Baltagi, Badi H. & Liu, Long, 2009. "A note on the application of EC2SLS and EC3SLS estimators in panel data models," Statistics & Probability Letters, Elsevier, vol. 79(20), pages 2189-2192, October.
- C13 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Estimation: General
This paper has been announced in the following NEP Reports:
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Cornwell, Christopher & Trumbull, William N, 1994. "Estimating the Economic Model of Crime with Panel Data," The Review of Economics and Statistics, MIT Press, vol. 76(2), pages 360-66, May.
- Baltagi, Badi H., 1981. "Simultaneous equations with error components," Journal of Econometrics, Elsevier, vol. 17(2), pages 189-200, November.
- Baltagi, Badi H. & Li, Qi, 1992. "A Note on the Estimation of Simultaneous Equations with Error Components," Econometric Theory, Cambridge University Press, vol. 8(01), pages 113-119, March.
- Balestra, Pietro & Varadharajan-Krishnakumar, Jayalakshmi, 1987. "Full Information Estimations of a System of Simultaneous Equations with Error Component Structure," Econometric Theory, Cambridge University Press, vol. 3(02), pages 223-246, April.
- Badi H. Baltagi, 2006. "Estimating an economic model of crime using panel data from North Carolina," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 21(4), pages 543-547.
- Baltagi, Badi H. & Liu, Long, 2011.
"Instrumental variable estimation of a spatial autoregressive panel model with random effects,"
Elsevier, vol. 111(2), pages 135-137, May.
- Badi H. Baltagi & Long Liu, 2011. "Instrument Variable Estimation of a Spatial Autoregressive Panel Model with Random Effects," Center for Policy Research Working Papers 127, Center for Policy Research, Maxwell School, Syracuse University.
- Mario Holzner, 2010.
"Inequality, Growth and Public Spending in Central, East and Southeast Europe,"
wiiw Working Papers
71, The Vienna Institute for International Economic Studies, wiiw.
- Mario Holzner, 2010. "Inequality, Growth and Public Spending in Central, East and Southeast Europe," The wiiw Balkan Observatory Working Papers 087, The Vienna Institute for International Economic Studies, wiiw.
- Mario Holzner, 2011. "Inequality, growth and public spending in Central, East and Southeast Europe," Working Papers 221, ECINEQ, Society for the Study of Economic Inequality.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Kelly Bogart) or (Katrina Wingle).
If references are entirely missing, you can add them using this form.