Texas Instruments TI-84 Plus Manual Book page 279

Since the scatter plot of time-versus-length data appears to be approximately linear, fit a
line to the data.
10. Press ... ~
regression model) from the
is pasted to the home screen.
LinReg(ax+b)
11. Press y d ¢ y e ¢. Press  ~
display the
VARS Y-VARS FUNCTION
menu, and then press
are pasted to the home screen as arguments to
Y1
.
LinReg(ax+b)
12. Press Í to execute
regression for the data in
Values for and
a
screen. The linear regression equation is stored in
. Residuals are calculated and stored
Y1
automatically in the list name
becomes an item on the
13. Press s. The regression line and the scatter
plot are displayed.
Chapter 12: Statistics
to select
4 4:LinReg(ax+b)
STAT CALC
to select
1
LinReg(ax+b)
and
L1 L2
are displayed on the home
b
RESID
LIST NAMES
(linear
menu.
to
1
secondary
. , , and
1:Y1 L1 L2
. The linear
is calculated.
, which
menu.
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