Abstract
Sources of influential observations include: (i) improperly recorded data, (ii) observational errors in the data, (iii) misspecification and (iv) outlying data points that are legitimate and contain valuable information which improve the efficiency of the estimation. It is constructive to isolate extreme points and to determine the extent to which the parameter estimates depend upon these desirable data.
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Notes
- 1.
This chapter is based on Belsley, Kuh andWelsch (1980), Johnston (1984), Maddala (1992) and Davidson and MacKinnon (1993). Additional references are the following:
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Footnote
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Baltagi, B.H. (2011). Regression Diagnostics and Specification Tests. In: Econometrics. Springer Texts in Business and Economics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-20059-5_8
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