Matrix Form Simple Linear Regression
In this video I cover the Matrix Formulation of the Simple Linear Regression Model. I provide tips and tricks to simplify and emphasize various properties of the matrix formulation. Of particular note are the matrices XTX and XTY as well as (XTX)^-1
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#Matrix
#Econometrics
0:00 Introduction and Design Matrix
02:00 Beta Hat Formula
02:42 The matrix X'X
06:24 Inverse of X'X
09:28 The matrix X'Y