what test should be used to compare several regression lines? what test should be used to compare multiple regression lines? what test should be used to compare several regression lines? what is the test to test for significant r which test do you use to compare several regression lines? what tests should be used to compare several regression lines? what is the test to compare two regression lines what test should be used to compare several regression lines? why use ANCOVA what test should be used to compare three regression lines if there are significant differences in the slopes of multiple regression lines, what test should be used? what test should be used to compare multiple regression lines? which test is used to compare multiple regression lines which regression test do you use to compare several regression lines what test should be used to compare several regression lines? what test should be used to compare several regression lines? which test should be used for comparison of multiple regression lines? what test should be used to compare several regression lines why use a test to compare regression what test is used to compare a regression line