Texas Instruments TITANIUM TI-89 - Manual (Page 860)

860 Appendix A: Functions and Instructions
Note: list1 through list4 must be a variable name
or c1–c99. (columns in the last data variable
shown in the Data/Matrix Editor).
list5 does not
have to be a variable name and cannot be c1–c99
.
¸
Regeq(x)"y1(x) ¸ Done
NewPlot 1,1,L1,L2 ¸ Done
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QuartReg
MATH/Statistics/Regressions menu
QuartReg list1 , list2 [ , [ list3 ] [, list4 , list5 ] ]
Calculates the quartic polynomial regression and
updates the system statistics variables.
All the lists must have equal dimensions except
for
list5 .
list1 represents xlist.
list2 represents ylist.
list3 represents frequency.
list4 represents category codes.
list5 represents category include list.
Note: list1 through list4 must be a variable name
or c1–c99 (columns in the last data variable
shown in the Data/Matrix Editor).
list5 does not
have to be a variable name and cannot be c1–
c99.
In function graphing mode:
{л 2,л 1,0,1,2,3,4,5,6}! L1 ¸
{л 2 л 1 0 ... }
{4,3,1,2,4,2,1,4,6}! L2 ¸
{4 3 1 ... }
QuartReg L1,L2 ¸ Done
ShowStat ¸
¸
Regeq(x)"y1(x)
¸
Done
NewPlot 1,1,L1,L2 ¸ Done
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