What is the Matrix Form of Regression Models? | Five Minute Econometrics | Tutorial | Topic 20 

【Five Minute Econometrics】(Econometric Tutorial) Topic 20: What is the Matrix Form of Regression Models?
Hi, I am Bob. Welcome to the Five Minute Econometrics, an econometric tutorial for basic concepts and methods. Today, we will explore the matrix form of the regression models. What is the matrix form of the regression model? A matrix is a particular arrangement of numbers. The sample we use in a regression model is also an arrangement of data. Therefore, a matrix is suitable for representing data used in the model.
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