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The degree of severity of heteroskedasticity and the traditional goldfeld and quandt pretest estimator

 

作者: Senyo B . S. K. Adjibolosoo,  

 

期刊: Communications in Statistics - Simulation and Computation  (Taylor Available online 1990)
卷期: Volume 19, issue 3  

页码: 827-836

 

ISSN:0361-0918

 

年代: 1990

 

DOI:10.1080/03610919008812890

 

出版商: Marcel Dekker, Inc.

 

关键词: Degree of Severity of Heteroskedasticity;Probability Density Function;Posterior Probability;Probabilistic Pretest Statistic;Monte Carlo Study

 

数据来源: Taylor

 

摘要:

The traditional Goldfeld and Quandt heteroskedasticity pretesting methodology disregards the fact that even though heteroskedasticity may exist, its degree of severity might be such that the OLS estimator would still outperform the 2SAE. It, therefore, produces results inferior to the OLS estimator when the degree of severity of heteroskedasticity is very mild. This paper through Monte Carlo simulations shows that the probabilistic pretesting procedure suggested by Adjibolosoo (1989) is more powerful than the traditional Goldfeld and Quandt heteroskedasticity pretesting methodology at the usual traditionally selected levels of significance

 

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