Alternatively, we could have used a maximum likelihood estimator to fit the model. Watch video demo. Why we need such a multitude of files can best be understood in the case of area data: An area, such as a region, can be described by its boundaries, and these form a polygon, geometrically speaking. There is an entire manual dedicated to SAR, and it has friendly introductions to the subject. We see that a 1-percentage point increase in those holding college degrees in a county reduces unemployment by 0.
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