weighted r squared in robust linear modeling weighted $r2$ what is weighted $r2$ weighted value in robust model why do we add weights into robust linear model weighted model definition what is the weighted value of robust linear model weighted model value for goodness of fit is r2 weighted what weighted parameter is used for goodness of fit weighted model of goodness of fit why do models have weights what is the value of weighted r in robust linear model? how is this useful weighted model of goodness of fit weighted r2 robust linear model weighted weighted value weighted r2 in robust linear models what is robust linear model what is the function for a robust linear model r why is mm weighted in robust linear model