Texas Instruments TI-82 STATS Manual Book page 205

The regression line appears to fit the central portion of the scatter plot well. However,
a residual plot may provide more information about this fit.
14. Press ...
to select
1
editor is displayed.
Press ~ and } to move the cursor onto
Press y [
INS
displayed in column
shift right one column. The
is displayed in the entry line, and alpha-lock
is on.
15. Press y [
LIST
menu.
If necessary, press † to move the cursor
onto the list name
16. Press Í to select
the stat list editor's
17. Press Í.
RESID
the stat list editor.
Press † repeatedly to examine the
residuals.
Notice that the first three residuals are negative. They correspond to the shortest
pendulum string lengths in
last four are negative. The latter correspond to the longer string lengths in
the residuals will show this pattern more clearly.
. The stat list
1:Edit
]. An unnamed column is
; , ,
3 L L L
3 4 5
Name=
] to display the
LIST NAMES
.
RESID
and paste it to
RESID
prompt.
Name=
is stored in column
. The next five residuals are positive, and three of the
L
1
.
L
3
, and
L
6
prompt
of
3
. Plotting
L
1
Statistics 12–5