Question
Suppose you have a model: Y = X + where the observations are iid but & is potentially correlated with X. Suppose there is an
Suppose you have a model: Y = Xβ + ε
where the observations are iid but & is potentially correlated with X. Suppose there is an instrumental variable Z that satisfies E(e|Z) = 0 and E(XZ) 0. However, you only observe a noisy measure of Z: Z* = Z+u Analyze whether By that that uses Z* as the instrument is consistent for 3. What assumptions are required for consistency?
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Financial Markets And Institutions
Authors: Frederic S. Mishkin, Stanley G. Eakins
7th Edition
013213683X, 978-0132136839
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