User Manual

Appendix B: Reference Information 397
RESERVED You attempted to use a system variable inappropriately. See Appendix A.
SINGULAR MAT
• A singular matrix (determinant = 0) is not valid as the argument for L1.
• The
SinReg instruction or a polynomial regression generated a singular
matrix (determinant = 0) because it could not find a solution, or a solution
does not exist.
This error is not returned during graphing. The TI-84 Plus allows for undefined
values on a graph.
SINGULARITY expression in the solve( function or the equation solver contains a singularity
(a point at which the function is not defined). Examine a graph of the function.
If the equation has a solution, change the bounds or the initial guess or both.
STAT You attempted a stat calculation with lists that are not appropriate.
• Statistical analyses must have at least two data points.
•
Med-Med must have at least three points in each partition.
• When you use a frequency list, its elements must be
‚ 0.
•(
Xmax N Xmin) à Xscl must be‚ 47 for a histogram.
STAT PLOT You attempted to display a graph when a stat plot that uses an undefined list is
turned on.
SYNTAX The command contains a syntax error. Look for misplaced functions,
arguments, parentheses, or commas. Appendix A displays the arguments and
punctuation needed to execute the function or instruction.
For example, stdDev(list[,freqlist]) is a function of the TI-84 Plus. The
arguments are shown in italics. The arguments in brackets are optional and
you need not type them. You must also be sure to separate multiple
arguments with a comma (,). For example stdDev(list[,freqlist]) might be
entered as stdDev(L1) or stdDev(L1,L2) since the frequency list or freqlist is
optional.
TOL NOT MET You requested a tolerance to which the algorithm cannot return an accurate
result.
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 graphing calculator is not
authorized to run the application.
VARIABLE You have tried to archive a variable that cannot be archived or you 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
graphing calculator.
Error Type Possible Causes and Suggested Remedies