Operation Manual

US 34II
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Stored Operations
mm oo %% nn pp
The TI
-
34
Ö
stores two operations,
OP1
and
OP2
. To store
an operation to
OP1
or
OP2
and recall it:
1. Press
% n
or
% p
.
2. Enter the operation (any combination of numbers,
operators, or menu items and their arguments).
3. Press
<
to save the operation to memory.
4.
m
or
o
recalls and displays the operation on the
entry line. The TI
-
34
Ö
automatically calculates the
result (without pressing
<
) and displays the counter
(as space permits) on the left side of the result line.
You can set the TI
-
34
Ö
to display only the counter and
the result (excluding the entry). Press
% n
or
% p
, press
!
until the = is highlighted (
Ù
) and
press
<
. Repeat to toggle this setting off.
Memory
zz LL %% hh{{
The TI
-
34
Ö
has 5 memory variables—
A
,
B
,
C
,
D
, and
E
.
You can store a real number or an expression that results
in a real number to a memory variable.
¦
z
accesses the menu of variables.
¦
L
lets you store values to variables.
¦
%
h
recalls the values of variables.
¦
%
{
clears all variable values.
Notation
%% ‚‚ CC
% ‚
displays the decimal notation mode menu.
These settings
only affect the display of results.
F
(default)
restores Floating-decimal format. Set decimal places to
n
(0–9) with
0123456789.
C
enters a value in scientific notation. Press
M
before
entering a negative exponent.
Stats
%%tt ww vv uu
1-VAR
stats analyzes data from 1 data set with 1 measured
variable,
X
.
2-VAR
stats analyzes paired data from 2 data
sets with 2 measured variables—
X
, the independent
variable, and
Y
, the dependent variable. You can enter up
to 42 data sets.
Steps for defining statistical data points:
1. Press
% t
. Select
1-VAR
or
2-VAR
and press
<
.
The
STAT
indicator displays.
2. Press
v
.
3. Enter a value for
X
1
and press
$
.
4. Then:
¦
In
1-VAR
stat mode, enter the frequency of occurrence
(
FRQ
) of the data point and press
$
.
FRQ
default=1. If
FRQ=0
, the data point is ignored. Or
¦
In
2-VAR
stat mode, enter the value for
Y
1
and press
$
.
5. Repeat steps 3 and 4 until all data points are entered.
You must press
<
or
$
to save the last data point
or
FRQ
value entered. If you add or delete data points,
the TI
-
34
Ö
automatically reorders the list.
6. When all points and frequencies are entered:
¦
Press
u
to display the menu of variables (see
table for definitions) and their current values, or
¦
Press
v
to return to the blank
STAT
screen. You can
do calculations with data variables (
Ï
,
Ð
, etc.). Select a
variable from the
u
menu and then press
<
to
evaluate the calculation.
7. When finished:
¦
Press
% t
and select
CLRDATA
to clear all data
points
without exiting
STAT
mode, or
¦
Press
% w <
to clear all data points,
variable and
FRQ
values, and to exit
STAT
mode (
STAT
indicator turns off).
Variables Definition
n Number of
X
or (
X,Y
) data points.
Ï
or
Ð
Mean of all
X
or
Y
values.
Sx or Sy Sample standard deviation of
X
or
Y
.
Î
x or
Î
y Population standard deviation of
X
or
Y
.
Ò
x or
Ò
y Sum of all
X
or
Y
values.
Ò
x
2
or
Ò
y
2
Sum of all
X
2
or
Y
2
values.
Ò
xy Sum of
X
…
Y
for all
XY
pairs.
a Linear regression slope.
b Linear regression
Y
-intercept.
r Correlation coefficient.
X
' (
2-VAR
) Uses a and b to calculate predicted X value
when you input a Y value.
Y
' (
2-VAR
) Uses a and b to calculate predicted Y value
when you input an X value.
Probability
HH
nPr
Calculates the number of possible permutations
of n items taken r at a time, given n and r. The
order of objects is important, as in a race.
nCr
Calculates the number of possible
combinations of n items taken r at a time, given
n and r. The order of objects is not important, as
in a hand of cards.
!
A factorial is the product of the positive integers
from 1 to n. n must be a positive whole number

69.
RAND
Generates a random real number between 0 and
1. To control a sequence of random numbers,
store an integer (
seed value )
‚
0 to rand. The
seed value changes randomly every time a
random number is generated.
RAND
[
Generates a random integer between 2 integers,
A and B, where A
{
RAND
[
{
B . Separate the 2
integers with a comma.
Errors
ARGUMENT
— A function does not have the correct number
of arguments.
DIVIDE BY 0
—
¦
You attempted to divide by 0.
¦
In statistics, n=1.
DOMAIN
— You specified an argument to a function outside
the valid range. For example:
¦
For
x
‡
: x = 0 or y < 0 and
x
not an odd integer.
¦
For y
x
: y and x = 0; y < 0 and x not an integer.
¦
For
‡
x : x < 0.
¦
For
LOG
or
LN
:
x

0.
¦
For
TAN
:
x = 90
¡
, -90
¡
, 270
¡
, -270
¡
, 450
¡
, etc.
¦
For
SIN
-
1
or
COS
-
1
:
| x | > 1.
¦
For
nCr
or
nPr
:
n or r are not integers
‚
0.
¦
For x
!:
x
is not an integer between 0 and 69.
EQ LENGTH ERROR
— An entry exceeds the digit limits (88
for Entry Line and 47 for Stat or Constant Entry lines); for
example, combining an entry with a constant that exceeds
the limit.
FRACMODE
— Pressing
}
when
Fracmode
=
Auto
.
FRQ DOMAIN
—
FRQ
value (in
1-VAR
stats) < 0 or >99, or not
an integer.
OP
— Pressing
m
or
o
when constants not defined or
while in
STAT
mode.
OVERFLOW
— |
q
|
‚
1
¯
10, where
q
is an angle in a
trigonometric, hyperbolic, or
R
4
Pr(
function.
STAT
—
¦
Pressing
u
with no defined data points.
¦
When not in STAT mode, pressing
v
,
u
, or
% w
.
SYNTAX
— The command contains a syntax error: entering
more than 23 pending operations, 8 pending values, or
having misplaced functions, arguments, parentheses, or
commas.
Battery Replacement
Replace protective cover. Place the TI
-
34
Ö
face down.
1. Using a small Phillips screwdriver, remove screws from
back case.
2. Starting from the bottom, carefully separate front from
back. Caution: Be careful not to damage any internal
parts.
3. Using a small Phillips screwdriver, if necessary, remove
old battery; replace with new one.
Caution: Avoid contact with other TI
-
34
Ö
components
while changing the battery.
4. If necessary, press
&
and
-
at the same time to
reset the TI
-
34
Ö
(clears memory and all settings).
Caution: Dispose of old batteries properly. Do not
incinerate batteries or leave where a child can find them.
In Case of Difficulty
Review instructions to be certain calculations were
performed properly.
Press
&
and
-
at the same time. This clears all
memory and settings.
Check the battery to ensure that it is fresh and properly
installed.
Change the battery when:
¦
&
does not turn the unit on, or
¦
The screen goes blank, or
¦
You get unexpected results.
To continue using the TI
-
34
Ö
†
until you can change the
battery:
1. Expose the solar panel to brighter light.
2. Press
&
and
-
at the same time to reset the
calculator. This clears all settings and memory.
†
Operates in well-lit areas using solar cell. Operates in
other light settings using battery.