516 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 516 of 132
TwoVar MATH/Statistics menu
TwoVar list1, list2[, [list3] [, list4, list5]]
Calculates the TwoVar statistics and updates
all 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.
{0,1,2,3,4,5,6}!L1 ¸
{0 1 2 ...}
{
0,2,3,4,3,4,6
}
!L2
¸
{0 2 3 ...}
TwoVar L
1
,L2
¸
Done
S
h
owStat
¸
Unarchiv CATALOG
Unarchiv var1 [, var2] [, var3] …
Moves the specified variables from the user
data archive memory to RAM.
You can access an archived variable the same
as you would a variable in RAM. However,
you cannot delete, rename, or store to an
archived variable because it is locked
automatically.
To archive variables, use Archive.
10!arctest ¸10
A
rc
h
ive arctest
¸
Done
5ùarctest
¸
50
1
5!arctest
¸
N
Unarchiv arctest ¸Done
15!arctest ¸15
unitV() MATH/Matrix/Vector ops menu
unitV(vector1) ⇒ vector
Returns either a row- or column-unit vector,
depending on the form of vector1.
vector1 must be either a single-row matrix or
a single-column matrix.
unitV([a,b,c]) ¸
[a
añ+bñ+cñ
b
añ+bñ+cñ c
añ+bñ+cñ]
unitV([1,2,1]) ¸
[
‡
6
6
‡
6
3
‡
6
6]
unitV([1;2;3]) ¸
‡14
14
‡14
7
3ø‡14
14
Unlock CATALOG
Unlock var1[, var2][, var3]...
Unlocks the specified variables.
Note: The variables can be locked using the
Lock command.