Operation Manual
12-8 Statistics
8212STAT.DOC TI-82, Chapter, English Bob Fedorisko Revised: 02/09/01 9:23 AM Printed: 02/09/01
12:42 PM Page 8 of 22
You can use the TI
.
82 to compare different models on the same data set.
26. Press
y
ã
STAT PLOT
ä
. Press
1
to select
Plot1
.
Press
~
Í
to turn the plot off.
Press
y
ã
STAT PLOT
ä
. Press
2
to select
Plot2
.
Press
Í
to turn the plot on. Press
†
†
Í
to define
Xlist
as
L
1
. Press
†
~
~
~
Í
to define
Ylist
as
L
4
. Leave
Mark
as
›
.
27. Press
y
ã
STAT PLOT
ä
. Press
3
to select
Plot3
.
Press
Í
to turn the plot on. Press
†
†
Í
to define
Xlist
as
L
1
. Press
†
~
~
~
~
~
Í
to define
Ylist
as
L
6
. Press
†
~
Í
to
define
Mark
as
+
.
Press
y
ã
STAT PLOT
ä
to view the settings.
28. Press
o
|
Í
†
Í
to turn off
Y
1
and
Y
2
.
Press
q
9
to plot the residuals.
›
marks the
residuals from
Med
.
Med
and
+
marks the
residuals from
LinReg
.
29. Press
y
ã
QUIT
ä
to return to the Home screen.
Press
~
1
(to select
round(
)
y
ã
Y-VARS
ä
1
(to select
Function...
)
1
(to select
Y
1
)
£
300000
¤
¢
0
¤
Í
. The value of
Y
1
(
Med
.
Med
model) for
X
=300,000, rounded to 0
decimal places (whole buildings), is shown.
Press
y
ã
ENTRY
ä
}
~
y
ã
Y-VARS
ä
1
2
Í
.
The value of
Y
2
(
LinReg(ax+b)
model) for
X
=300,000 is shown.