Texas Instruments TI-83 PLUS - Manual (Page 321)

TI-83 Plus Statistics 318
8. Press Í to select On , which turns on plot 1.
Press † Í to select " (scatter plot). Press
† y d to specify Xlist:L 1
for plot 1. Press †
y e to specify Ylist:L 2
for plot 1. Press † ~
Í to select
+
as the Mark for each data point
on the scatter plot.
9. Press q
9 to select 9:ZoomStat from the
ZOOM
menu. The window variables are adjusted
automatically, and plot 1 is displayed. This is a
scatter plot of the time-versus-length data.
Since the scatter plot of time-versus-length data appears to be
approximately linear, fit a line to the data.
10. Press … ~
4 to select 4:LinReg(ax+b) (linear
regression model) from the
STAT CALC
menu.
LinReg(ax+b) is pasted to the home screen.