Texas Instruments TI-82 STATS Manual Book page 204

Getting Started: Pendulum Lengths and Periods
Since the scatter plot of time-versus-length data appears to be approximately linear,
fit a line to the data.
10. Press ... ~
4
(linear regression model) from the
menu.
CALC LinReg(ax+b)
home screen.
11. Press y [ ] ¢ y [
L1
~
to display the
1
secondary menu, and then press
FUNCTION
to select .
1 1:Y
1
the home screen as arguments to
.
LinReg(ax+b)
12. Press Í to execute
linear regression for the data in
calculated. Values for
the home screen. The linear regression
equation is stored in
calculated and stored automatically in the list
name , which becomes an item on the
RESID
menu.
LIST NAMES
13. Press s. The regression line and the
scatter plot are displayed.
12–4 Statistics
to select
4:LinReg(ax+b)
STAT
is pasted to the
] ¢. Press 
L2
VARS Y.VARS
, , and are pasted to
L L Y
1 2 1
LinReg(ax+b)
and
L
1
and are displayed on
a b
. Residuals are
Y
1
. The
is
L
2
(cont.)