Which of the following can cause OLS estimators to be biased? (i) Heteroskedasticity. (ii) Omitting and important

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Which of the following can cause OLS estimators to be biased?
(i) Heteroskedasticity.
(ii) Omitting and important variable.
(iii) A sample correlation coefficient of .95 between two independent variables both included in the model?

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Introductory Econometrics A Modern Approach

ISBN: 978-0324660548

4th edition

Authors: Jeffrey M. Wooldridge

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Question Posted: Apr 21, 2016 04:46 AM

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Which of the following can cause OLS estimators to be biased? (i) Heteroskedasticity. (ii) Omitting and important

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Only ii omitting an important variable can cause bias and thi...View the full answer

Introductory Econometrics A Modern Approach

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