Question
Consider the three-variable linear regression model Y = Bo +BX + BX, tui (i) (ii) (iii) In the presence of perfect multicollinearity, show that
Consider the three-variable linear regression model Y = Bo +BX + BX, tui (i) (ii) (iii) In the presence of perfect multicollinearity, show that b, the least-squares estimator of P, is indeterminate. [6 marks] Show that the variance of b, the least-squares estimator of , can be written as V (b) = u (1-13) [4 marks] Using the result in part (ii), determine what happens to the variance of b as the extent of collinearity increases. [2 marks] Briefly describe three methods of detecting multicollinearity. [8 marks] Activate Windo Go to Settings to act
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Answer Let solve the question step by step STEP 1 In the presence of perfect multicollinearity the model is as follows Y B2 B1X1 B2X2 u Perfect multic...Get Instant Access to Expert-Tailored Solutions
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Introduction to Econometrics
Authors: James H. Stock, Mark W. Watson
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