Asymptotic variance under many instruments: Numerical computations
AbstractIn models with many instruments, the asymptotic variance of the LIML estimator contains four components. Apart from the traditional variance, one term is due to instrument numerosity, and the last two appear if the model errors are non-normal. For a stylized instrumental variables model, we compute numerical values of these components to uncover how the four components are related to each other in magnitude.
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Bibliographic InfoArticle provided by Elsevier in its journal Economics Letters.
Volume (Year): 118 (2013)
Issue (Month): 2 ()
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Web page: http://www.elsevier.com/locate/ecolet
Many instruments; Asymptotic variance; LIML; Non-normality;
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