Texas Instruments TI-60 Owner's Manual page 74

APPENDIX A
ERROR CONDITIONS
5 Calculate 2nd ] |.rn-1| with only one data point
6 Calculate the slope, intercept, correlation. *\ or y' of a line that parallels
the y-axis (vertical Hne).
7 Calculate the correlation or x' of a line that parallels the x-axis (horizontal
Hne).
8 Calculate slope, intercept, correlation, x'. or y- with only one data poinl
entered
64-08