regression_line
has definitions from the fields of mathematics,statistics


1 
[ 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
Synonyms 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 underachievers for the purposes of sample selection . Overachievers were at_least one standard_deviation above the regression_line in their school_system . Related terms 
* 
