Texas Instruments TI-80 User Manual

Statistics 9-5
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.

Texas Instruments TI-80 Specifications

General

Brand	Texas Instruments
Model	TI-80
Category	Calculator
Language	English