Beware of "good" outliers and overoptimistic conclusions
AbstractThe main goal of this paper is to warn practitioners of the danger of neglecting outliers in regression analysis, in particular, good leverage points (i.e. points lying close to the regression hyperplane but outlying in the x-dimension). While the types of outliers which do influence regression estimates (vertical outliers and bad leverage points) have been extensively investigated, good leverage points have been largely ignored, probably because they do not affect the estimated regression parameters. However, their effect on inference is far from negligible. We propose a step-by-step procedure to identify and treat all types of outliers. The paper of Persson and Tabellini [American Economic Review (2004) Vol. 94, pp. 25–46] linking the degree of proportionality of an electoral system to the size of government is discussed to illustrate how the choice of a measure and the existence of atypical observations may substantially influence results.
Download InfoTo our knowledge, this item is not available for download. To find whether it is available, there are three options:
1. Check below under "Related research" whether another version of this item is available online.
2. Check on the provider's web page whether it is in fact available.
3. Perform a search for a similarly titled item that would be available.
Bibliographic InfoPaper provided by ULB -- Universite Libre de Bruxelles in its series ULB Institutional Repository with number 2013/9907.
Date of creation: Jun 2009
Date of revision:
Publication status: Published in: Oxford Bulletin of Economics and Statistics (2009) v.71 n° 3,p.437-452
C12 • C21 • H11;
Other versions of this item:
- Catherine Dehon & Marjorie Gassner & Vincenzo Verardi, 2009. "Beware of 'Good' Outliers and Overoptimistic Conclusions," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 71(3), pages 437-452, 06.
- C12 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Hypothesis Testing: General
- â¢ - - - - - -
- C21 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Cross-Sectional Models; Spatial Models; Treatment Effect Models
- â¢ - - - - - -
- H11 - Public Economics - - Structure and Scope of Government - - - Structure and Scope of Government
You can help add them by filling out this form.
CitEc Project, subscribe to its RSS feed for this item.
- Vincenzo Verardi & Joachim Wagner, 2012.
"Productivity Premia for German Manufacturing Firms Exporting to the Euro-Area and Beyond: First Evidence from Robust Fixed Effects Estimations,"
The World Economy,
Wiley Blackwell, vol. 35(6), pages 694-712, 06.
- Vincenzo Verardi & Joachim Wagner, 2010. "Productivity premia for German manufacturing firms exporting to the Euro-area and beyond: First evidence from robust fixed effects estimations," Working Paper Series in Economics 172, University of Lüneburg, Institute of Economics.
- Verardi, Vincenzo & Wagner, Joachim, 2010. "Productivity Premia for German Manufacturing Firms Exporting to the Euro-Area and Beyond: First Evidence from Robust Fixed Effects Estimations," IZA Discussion Papers 4964, Institute for the Study of Labor (IZA).
- Liebermann, Joelle, 2011. "The Impact of Macroeconomic News on Bond Yields: (In)Stabilities over Time and Relative Importance," Research Technical Papers 7/RT/11, Central Bank of Ireland.
- Goetghebuer, Tatiana, 2011. "Productive inefficiency in patriarchal family farms: evidence from Mali," Proceedings of the German Development Economics Conference, Berlin 2011 34, Verein für Socialpolitik, Research Committee Development Economics.
- Matthew, Salois, 2010.
"Obesity and Diabetes, the Built Environment, and the ‘Local’ Food Economy,"
27945, University Library of Munich, Germany.
- Salois, Matthew J., 2011. "Obesity and Diabetes, the Built Environment, and the 'Local' Food Economy," 2011 Annual Meeting, July 24-26, 2011, Pittsburgh, Pennsylvania 103649, Agricultural and Applied Economics Association.
- Biewen, Martin & Weiser, Constantin, 2011. "A New Approach to Testing Marginal Productivity Theory," IZA Discussion Papers 6113, Institute for the Study of Labor (IZA).
- Salois, Matthew J., 2012. "Obesity and diabetes, the built environment, and the ‘local’ food economy in the United States, 2007," Economics & Human Biology, Elsevier, vol. 10(1), pages 35-42.
- Dehon, Catherine & Gassner, Marjorie & Verardi, Vincenzo, 2009. "A Hausman-type test to detect the presence of influential outliers in regression analysis," Economics Letters, Elsevier, vol. 105(1), pages 64-67, October.
- Vincenzo Verardi & Joachim Wagner, 2010.
"Robust Estimation of Linear Fixed Effects Panel Data Models with an Application to the Exporter Productivity Premium,"
Working Paper Series in Economics
168, University of Lüneburg, Institute of Economics.
- Vincenzo Verardi & Joachim Wagner, 2011. "Robust Estimation of Linear Fixed Effects Panel Data Models with an Application to the Exporter Productivity Premium," Journal of Economics and Statistics (Jahrbuecher fuer Nationaloekonomie und Statistik), Justus-Liebig University Giessen, Department of Statistics and Economics, vol. 231(4), pages 546-557, August.
- Verardi, Vincenzo & Wagner, Joachim, 2010. "Robust Estimation of Linear Fixed Effects Panel Data Models with an Application to the Exporter Productivity Premium," IZA Discussion Papers 4928, Institute for the Study of Labor (IZA).
- Badi H. Baltagi & Georges Bresson, 2012. "A Robust Hausman-Taylor Estimator," Center for Policy Research Working Papers 140, Center for Policy Research, Maxwell School, Syracuse University.
- Liebermann, Joelle, 2010.
"Real-time nowcasting of GDP: Factor model versus professional forecasters,"
28819, University Library of Munich, Germany.
- Liebermann, Joelle, 2011. "Real-Time Nowcasting of GDP: Factor Model versus Professional Forecasters," Research Technical Papers 3/RT/11, Central Bank of Ireland.
- Maria Vera-Cabello & Marcos Sanso-Navarro & Fernando Sanz, 2011. "The impact of the American Civil War on city growth," ERSA conference papers ersa11p1514, European Regional Science Association.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Benoit Pauwels).
If references are entirely missing, you can add them using this form.