428 Appendix A: Functions and Instructions
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 428 of 132
CubicReg MATH/Statistics/Regressions menu
CubicReg list1, list2[, [list3] [, list4, list5]]
Calculates the cubic polynomial regression
and updates all the 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.
{0,1,2,3}!L1 ¸{0 1 2 3}
{
0,2,3,4
}
!L2
¸{
0 2 3 4
}
Cu
b
icReg L
1
,L2
¸
Done
S
h
owStat
¸
¸
regeq(x)"y1(x) ¸Done
NewP
l
ot
1
,
1
,L
1
,L2
¸
Done
¥%
cumSum() MATH/List menu
cumSum(list1) ⇒ list
Returns a list of the cumulative sums of the
elements in list1, starting at element 1.
cumSum({1,2,3,4}) ¸
{1
3 6
1
0
}
cumSum(matrix1) ⇒ matrix
Returns a matrix of the cumulative sums of
the elements in matrix1. Each element is the
cumulative sum of the column from top to
bottom.
[1,2;3,4;5,6]!m1 ¸
1 2
3 4
5 6
cumSum(m1) ¸
1 2
4 6
9 12
CustmOff CATALOG
CustmOff
Removes a custom toolbar.
CustmOn and CustmOff enable a program to
control a custom toolbar. Manually, you can
press 2¾
to toggle a custom toolbar
on and off. Also, a custom toolbar is removed
automatically when you change applications.
See Custom program listing example.
CustmOn CATALOG
CustmOn
Activates a custom toolbar that has already
been set up in a Custom...EndCustm block.
CustmOn and CustmOff enable a program to
control a custom toolbar. Manually, you can
press 2¾
to toggle a custom toolbar
on and off.
See Custom program listing example.