Texas Instruments TI-80 User Manual - Page 131
regression equation, is updated.
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Store the regression equation into the Y= list and graph it. 15. In FUNC mode, press ( to display the Y= editor. Press M to clear Y1, if necessary. Turn off all other functions, if necessary. 16. Press L to display the VARS menu. 17. Press 2 to select STATISTICS..., and press 9 9 to display the VARS EQ menu. 18. Press 5 to select REGEQ, which copies the linear regression to the Y= editor screen. Note: Each time you calculate a regression, the regression equation (REGEQ) is updated. 19. Press ,. The data points are plotted (›), and then the regression line is drawn. 20. Press + and then ~ to trace the points in PLOT1, as indicated by P1 in the upper right corner of the display. Press † to move to Y1, and continue tracing the function. Statistics 9-5