Texas Instruments TI-30XIIS Teachers Guide - Page 113

Clrdata, A B C D E

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Quick Reference to Keys (Continued) A KEY > % Z % t u L @ % \ FUNCTION Calculates the sine. Calculates the inverse sine. Displays the following menu from which you can select 1-VAR, 2-VAR, or CLRDATA. 1-VAR Analyzes data from 1 set of data with 1 measured variable−x. 2-VAR Analyzes paired data from 2 sets of data with 2 measured variables-x, the independent variable, and y, the dependent variable. CLRDATA Clears data values without exiting STAT mode. Displays the following menu of stat variables with their current values. n v or w Number of x (or x,y) data points. Mean of all x or y values. Sx or Sy sx or sy Sample standard deviation of x or y. Population standard deviation of x or y. Gx or Gy Sum of all x values or y values. Gx2 or Gy2 Sum of all x 2 values or y 2 values. Gxy Sum of (x Q y) for all xy pairs in 2 lists. a Linear regression slope. b Linear regression y-intercept. r Correlation coefficient. Displays the following menu of variables. A B C D E Lets you select a variable in which to store the displayed value. The new variable replaces any previously stored value. rand Lets you set a seed value for random integers. Calculates the tangent. Calculates the inverse tangent. © 1999 TEXAS INSTRUMENTS INCORPORATED TI-30X ÙS: A Guide for Teachers A-5

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© 1999 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-30X
Ù
S: A Guide for Teachers
A-5
Quick Reference to Keys
(Continued)
A
K
EY
F
UNCTION
>
Calculates the sine.
%
Z
Calculates the inverse sine.
%
t
Displays the following menu from which you can select
1-VAR
,
2-VAR
, or
CLRDATA
.
1-VAR
Analyzes data from 1 set of data with 1 measured
variable
-
x.
2-VAR
Analyzes paired data from 2 sets of data with 2 measured
variables—x, the independent variable, and y, the
dependent variable.
CLRDATA
Clears data values without exiting
STAT
mode.
u
Displays the following menu of stat variables with their current values.
n
Number of x (or x,y) data points.
v
or
w
Mean of all x or y values.
Sx
or
Sy
Sample standard deviation of x or y.
s
x
or
s
y
Population standard deviation of x or y.
G
x
or
G
y
Sum of all x values or y values.
G
x
2
or
G
y
2
Sum of all x 2 values or y 2 values.
G
xy
Sum of (x
Q
y) for all xy pairs in 2 lists.
a
Linear regression slope.
b
Linear regression y-intercept.
r
Correlation coefficient.
L
Displays the following menu of variables.
A B C D E
Lets you select a variable in which to store the displayed
value. The new variable replaces any previously stored
value.
rand
Lets you set a seed value for random integers.
@
Calculates the tangent.
%
\
Calculates the inverse tangent.