Calculator User Manual

Chapter 20: A to Z Function and Instruction Reference
331
20ATOZ.DOC TI-86, Chap 20, US English Bob Fedorisko Revised: 02/13/01 2:42 PM Printed: 02/13/01 3:05 PM Page 331 of 11820ATOZ.DOC TI-86, Chap 20, US English Bob Fedorisko Revised: 02/13/01 2:42 PM Printed: 02/13/01 3:05 PM Page 331 of 118
P2Reg
Uses
xStat
,
yStat
, and
fStat
, and stores the regression
equation to
RegEq
only.
P3Reg
STAT CALC menu
Built-in equation variables
such as
y1
,
r1
, and
xt1
are
case-sensitive. Do not use
Y1
,
R1
, and
XT1
.
P3Reg xList,yList,frequencyList,equationVariable
Performs a third order polynomial regression using real
data pairs in
xList
and
yList
and frequencies in
frequencyList
. The regression equation is stored to
equationVariable
, which must be a built-in equation
variable such as
y1
,
r1
, and
xt1
. The equation’s
coefficients always are stored as a list to built-in
variable
PRegC
.
Values used for
xList
,
yList
, and
frequencyList
are
stored automatically to built-in variables
xStat
,
yStat
,
and
fStat
, respectively. The regression equation is
stored also to built-in equation variable
RegEq
.
P3Reg xList,yList,equationVariable
Uses frequencies of 1.
P3Reg xList,yList,frequencyList
Stores the regression equation to
RegEq
only.
In
Func
graphing mode:
{1,2,3,4,5,6}
¶
L1
b
{1 2 3 4 5 6}
{
L
6,15,27,88,145,294}
¶
L2
b
{
L
6 15 27 88 145 294}
P3Reg L1,L2,y1
b
Plot1(1,L1,L2)
b
Done
ZData
b
P3Reg xList,yList
Uses frequencies of 1, and stores the regression
equation to
RegEq
only.