Show that when the model matrix X is used as the IV matrix Z in instrumentalvariables estimation,
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Show that when the model matrix X is used as the IV matrix Z in instrumentalvariables estimation, the IV and OLS estimators and their covariance matrices coincide. See Equations 9.28 and 9.29 (on page 233).
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Related Book For
Applied Regression Analysis And Generalized Linear Models
ISBN: 9781452205663
3rd Edition
Authors: By John Fox
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