Texas Instruments -86 - ViewScreen Calculator, Manual Book

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332
Chapter 20: A to Z Function and Instruction Reference
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 332 of 118
P3Reg equationVariable
Uses xStat , yStat , and fStat for xList , yList , and
frequencyList , respectively. These built-in variables
must contain valid data of the same dimension;
otherwise, an error occurs. The regression equation is
stored to
equationVariable and RegEq .
P3Reg
Uses
xStat
,
yStat
, and
fStat
, and stores the regression
equation to
RegEq
only.
P4Reg
STAT CALC menu
Built-in equation variables
such as y1, r1, and xt1 are
case-sensitive. Do not use
Y1, R1, and XT1.
P4Reg xList , yList , frequencyList , equationVariable
Performs a fourth 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
.
P4Reg xList , yList , equationVariable
Uses frequencies of 1.
P4Reg xList , yList , frequencyList
Stores the regression equation to RegEq only.
In
Func
graphing mode:
{
L
2,
L
1,0,1,2,3,4,5,6}
¶
L1
b
{
L
2
L
1 0 1 2 3 4 5 6}
{4,3,1,2,3,2,2,4,6}
¶
L2
b
{4 3 1 2 3 2 2 4 6}
P4Reg L1,L2,y1
b
Plot1(1,L1,L2)
b
Done
ZData
b