Texas Instruments TI89TITANIUM User Manual - Page 840

Logistic MATH/Statistics/Regressions menu Logistic list1, list2 [ , [iterations] , [list3] [, list4, list5] ] In function graphing mode: 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. {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 ¸ 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. ¸ regeq(x)!y1(x) ¸ NewPlot 1,1,L1,L2 ¸ Done Done Note: list1 through list4 must be a variable name ¥% or c1-c99 (columns in the last data variable „9 shown in the Data/Matrix Editor). list5 does not have to be a variable name and cannot be c1-c99 . 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 © 840 Appendix A: Functions and Instructions