what model has a hyperplane vs. a regression model why does hat matrix work why is the hat matrix a correlation coefficient? what is the relationship between hat and fit how can residuals and fit of the regression model be correlated is it uncorrelated in regression what is hat matrix what would the fit fit in a regression be how can residuals in regression modeling be correlated how is residuals correlated how is the residual of a regression model correlated how can residuals be correlated in an ols regression model? how do the residuals of a regression model become correlated to one another? how can residuals and the fit of a regression model be correlated? quizlet what is the hat matrix of statistical regression what is the hat matrix can residuals of regression be correlated? what is hat in math how can residuals be correlated how many parameters are included in a hat matrix