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In statistics, regression analysis is a statistical process for estimating the relationships among variables. It includes many techniques for modeling and analyzing several variables, when the focus is on the relationship between a dependent variable and one or more independent variables (or 'predictors').

1
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From a) we obtain $y - \hat{y}_x = M_xy = M_xu$ and from b) $y - \hat{y}_z = M_zy = M_zX\beta + M_zu$, where $M_x$ and $M_z$ are the residual-maker matrices (the ones from the accepted answer of the q …
answered Aug 15 '19 by Grada Gukovic
2
votes
If you watch closely, you will find out that the slope of the lines is -1. I.e. the values of y along every one of the lines are exactly equal. That is you get this lines only because you have great m …
answered Mar 1 '20 by Grada Gukovic
8
votes
I'd interact the regressor you are interested in with a dummy for the country being developed and see what happens. Its entirely possible that the mechanisms at play in developed contries are differen …
answered Jul 1 '21 by Grada Gukovic