Texas Instruments TI-83 Manual Book page 206

18. Press y [
STAT PLOT
from the
STAT PLOTS
plot editor is displayed for plot 2.
19. Press Í to select
plot 2.
Press † Í to select
Press † y [
plot 2. Press † [
(alpha-lock is on) to specify
for plot 2. Press † Í to select
the mark for each data point on the
scatter plot.
20. Press o to display the
Press | to move the cursor onto the
= sign, and then press Í to deselect
. Press } Í to turn off plot 1.
Y
1
21. Press q
9
the menu. The window variables
ZOOM
are adjusted automatically, and plot 2 is
displayed. This is a scatter plot of the
residuals.
Notice the pattern of the residuals: a group of negative residuals, then a group
of positive residuals, and then another group of negative residuals.
12-6 Statistics
] to select
2
menu. The stat
, which turns on
On
" (scatter plot).
] to specify
Xlist:L
L1
] [ ] [ ] [ ] [ ]
R E S I D
Ylist:RESID
editor.
Y=
to select
9:ZoomStat
2:Plot2
for
1
as
›
from