Texas Instruments TI-83 - Page 423

General Information B-9
8399APXB.DOC TI-83 Intl English, Appendix B Bob Fedorisko Revised: 02/19/01 1:12 PM Printed: 02/19/01 1:41
PM Page 9 of 14
Error Type Possible Causes and Suggested Remedies
SINGULARITY
expression
in the
solve(
function or the equation solver
contains a sin
g
ularity
(
a point at which the function is not
defined
)
. Examine a
g
raph of the function. If the equation
has a solution, chan
g
e the bounds or the initial
g
uess 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
g
raph when a stat plot that uses
an undefined list is turned on.
SYNTAX
The command contains a syntax error. Look for misplaced
functions, ar
g
uments, parentheses, or commas. See
Appendix A and the appropriate chapter.
TOL NOT MET
You requested a tolerance to which the al
g
orithm 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
.
WINDOW RANGE
A problem exists with the window variables.
¦
You defined
Xmax

Xmin
or
Ymax

Ymin
.
¦
You defined
q
max

q
min
and
q
step
>
0
(or vice versa).
¦
You attempted to define
Tstep=0
.
¦
You defined
Tmax

Tmin
and
Tstep
>
0
(or vice versa).
¦
Window variables are too small or too lar
g
e to
g
raph
correctly. You may have attempted to zoom in or zoom
out to a point that exceeds the TI
.
83’s numerical range.
ZOOM
¦
A point or a line, instead of a box, is defined in
ZBox.
¦
A
ZOOM
operation returned a math error.