Texas Instruments TI-83 PLUS - Manual (Page 755)

TI-83 Plus General Information 752
Error Type Possible Causes and Suggested Remedies
UNDEFINED
You referenced a variable that is not currently defined. For
example, you referenced a stat variable when there is no
current calculation because a list has been edited, or you
referenced a variable when the variable is not valid for the
current calculation, such as a after Med
. Med.
VALIDATION
Electrical interference caused a link to fail or this calculator
is not authorized to run the application.
VARIABLE
You have tried to archive a variable that cannot be
archived or you have have.tried to unarchive an application
or group.
Examples of variables that cannot be archived include:
•
Real numbers LRESID, R, T, X, Y, Theta, Statistic
variables under Vars, STATISTICS menu, Yvars, and
the AppIdList.
VERSION
You have attempted to receive an incompatible variable
version from another calculator.