Texas Instruments TITANIUM TI-89 - Manual (Page 840)

840 Appendix A: Functions and Instructions
Logistic MATH/Statistics/Regressions menu
Logistic list1 , list2 [ , [ iterations ] , [ list3 ] [, list4 , list5 ] ]
Calculates the logistic regression 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.
iterations specifies the maximum number of times
a solution will be attempted. If omitted, 64 is
used. Typically, larger values result in better
accuracy but longer execution times, and vice
versa.
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:
{1,2,3,4,5,6}!L1 ¸ {1 2 3 …}
{1,1.3,2.5,3.5,4.5,4.8}!L2
¸
{1 1.3 2.5 …}
Logistic L1,L2 ¸ Done
ShowStat ¸
¸
regeq(x)!y1(x) ¸ Done
NewPlot 1,1,L1,L2 ¸ Done
¥%
„ 9
Loop CATALOG
Loop
block
EndLoop
Repeatedly executes the statements in block . Note
that the loop will be executed endlessly, unless a
Goto or Exit instruction is executed within block .
block is a sequence of statements separated with
the “:” character.
Program segment:
©
:1! i
:Loop
: Rand(6)! die1
: Rand(6)! die2
: If die1=6 and die2=6
: Goto End
: i+1! i
:EndLoop
:Lbl End
:Disp "The number of rolls is", i
©