Population Regression Model Assignment | Homework For You
December 10th, 2019
Consider the following population regression model relating the dependent variable y* and the regressor X*,
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However, during the data collection, the regressor is measured with error, i.e., the observed regressor is
X=X* +V
a) Suppose Cov(, V,) 0, please show why OLS estimator will be biased.
b) If there exists an exogenous variable Z which is a valid instrument for X, please state two
assumptions that Z should satisfy. Get Economics homework help today