I am using TI-Graphlink to write a very text based program. I originally wrote it for my TI-84+, where it works just fine. I was able to give it some people who needed it that had TI-83+ calcs. Unfortunately, silly me used lowercase letters for asthetic value (and ease of reading). I have gone through and removed all the lowercase except for some variable symbols which i got from the keypad on graph link (namley p"hat" and xbar are the only variable left in).

Besides the lack of lowercase is there any other thing that could be causing me problems? Its a very simple program that displays conditions to check for the most common Statistical inference tests.

i notice it disliked some of my symbols, so those wierd symbols are actually a <=, >=, phat, xbar, or r^2. Also the LinReg(a+bx) was taken from graphlink keypad.

```
Lbl 1
Menu("COND 4 INFERENCE","1 SAMPLE Z",2,"1 SAMPLE T",3,"2 SAMPLE T",4,"1 PROPORTION Z",5,"2 PROPORTION Z",6,"CHI-SQUARES",7,"LIN REG T",8)
Lbl 2
ClrHome
Disp " 1 SAMPLE Z ","----------------","1) MUST BE SRS","2) SAMPLING DIST","OF Ë MUST","NORMAL BY POP","OR CENT LIMIT TH"
Pause
Goto 9
Lbl 3
ClrHome
Disp " 1 SAMPLE T ","----------------","1) MUST BE SRS","2) FOR N<15","MUST BE NORMAL","USE HIST AND/OR","NORM PROB PLOT"
Pause
Disp "1 SAMPLE T(CONT)","----------------","2) FOR 15÷N<40","NO STRONG SKEW","AND NO OUTLIERS","USE HIST AND","MOD BOX + WHISKER"
Pause
Disp "1 SAMPLE T(CONT)","----------------","2) FOR Nù40","IT PASSES"
Pause
Goto 9
Lbl 4
ClrHome
Disp " 2 SAMPLE T ","----------------","1) MUST BE 2 IND","SRS RAND ASSIGN","COUNTS","2) FOR N+n‚<15","BOTH MUST B NORM"
Pause
Disp "2 SAMPLE T(CONT)","----------------","2) FOR 15÷N+n‚<40","BOTH MUST HAVE","NO STRONG SKEW","AND NO OUTLIERS"
Pause
Disp "2 SAMPLE T(CONT)","----------------","2) FOR N+n‚ù40","THEY PASS"
Pause
Goto 9
Lbl 5
ClrHome
Disp "1 PROPORTION Z","----------------","1) MUST BE SRS","2) POP ù 10N","3) FOR INTERVALS","Nê AND N(1-ê)ù10"
Pause
Disp "1 PROP Z(CONT)","----------------","3) FOR TESTS","Np AND N(1-p)ù10","WHERE P IS:"," P NOUGHT"
Pause
Goto 9
Lbl 6
ClrHome
Disp "2 PROPORTION Z","----------------","1) MUST BE TWO IND"," SRS","2) POP ù 10N"
Pause
Disp "2 PROP Z(CONT)","----------------","3) FOR INTERVALS","Nê, n‚ê‚, N(1-ê)","AND n‚(1-ê‚)"," MUST BE ù 5"
Pause
Disp "2 PROP Z(CONT)","----------------","3) FOR TESTS","Nê, n‚ê, N(1-ê)","AND n‚(1-ê)","MUST BE ù 5","ê = POOLED PROP"
Pause
Goto 9
Lbl 7
ClrHome
Disp "CHI-SQUARE TESTS","----------------","1) MUST BE SRS","OR SAMPS MUST BE","INDEPEND SRS","2) ALL E.C.S ù 1","AND NO MORE THAN"
Pause
Disp " äÜ TESTS(CONT) ","----------------","2) ... ","20 PERCENT","OF E.C.S CAN BE"," LESS THAN 5"
Pause
Disp " äÜ TESTS(CONT) ","----------------","FOR 2x2","ALL E.C. MUST BE","AT LEAST 5"
Pause
Goto 9
Lbl 8
ClrHome
Disp " LIN REG T ","----------------","1) MUST BE SRS","2) OBS. ARE IND","3)SMP ROUGHLY LIN","4)SCATTER OF PTS","ABOUT LSRL MUST"
Pause
Disp "LIN REG T (CONT)","----------------","4) BE ROUGHLY SAME","THROUGHOUT","5)RESIDUALS MUST","BE APPROX NORM"
Pause
Disp "LIN REG T (CONT)","----------------","HOW TO CHECK:","3)LinReg(a+bx) ","CHECK rò OR","SCATTER PLOT","4)PLOT LV.RESID"
Pause
Disp "LIN REG T (CONT)","----------------","HOW TO CHECK:","5) HIST OF RESID"
Pause
Goto 9
Lbl 9
ClrHome
Menu("COND 4 INFERENCE","AGAIN?",1,"DONE",10)
Lbl 10
ClrHome
While 0
BY ROSS LARSON
End
```