regression_line has definitions from the fields of mathematics,statistics
[ noun ] (mathematics,statistics) a smooth curve fitted to the set of paired data in regression analysis; for linear regression the curve is a straight line



Used in print

(Jesse W. Grimes and Wesley Allinsmith, "Compuls...)

Children whose reading scores were at_least one standard_deviation below the regression_line of each total third grade school population were considered under-achievers for the purposes of sample selection .

Over-achievers were at_least one standard_deviation above the regression_line in their school_system .