Let x t be the 1 (k + 1) vector of explanatory variables for observation t.
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Let xt be the 1 × (k + 1) vector of explanatory variables for observation t. Show that the OLS estimator β̂ can be written as
Dividing each summation by n shows that β̂ is a function of sample averages.
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Related Book For
Introductory Econometrics A Modern Approach
ISBN: 9781337558860
7th Edition
Authors: Jeffrey Wooldridge
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