Texas Instruments TI-89, TI-92

Appendix A: Functions and Instructions 507

8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 507 of 132

stdDev(matrix1[, freqmatrix]) ⇒ matrix

Returns a row vector of the standard

deviations of the columns in matrix1.

Each freqmatrix element counts the number

of consecutive occurrences of the

corresponding element in matrix1.

Note: matrix1 must have at least two rows.

stdDev([1,2,5;-3,0,1;.5,.7,3])

[2.179... 1.014... 2]

stdDev([L1.2,5.3;2.5,7.3;6,L4],

[4,2;3,3;1,7]) ¸

[2.7005,5.44695]

StoGDB CATALOG

StoGDB GDBvar

Creates a Graph database (GDB) variable

that contains the current:

* Graphing mode

* Y= functions

* Window variables

* Graph format settings

1- or 2-Graph setting (split screen and ratio

settings if 2-Graph mode)

Angle mode

Real/complex mode

* Initial conditions if Sequence or

Diff Equations mode

* Table flags

* tblStart, @tbl, tblInput

You can use RclGDB GDBvar to restore the

graph environment.

*Note: These items are saved for both graphs

in 2-Graph mode.

Stop CATALOG

Stop

Used as a program instruction to stop

program execution.

Program segment:

For i,

If i=5

Stop

For

StoPic CATALOG

StoPic picVar [, pxlRow, pxlCol] [, width, height]

Displays the graph screen and copies a

rectangular area of the display to the variable

picVar.

pxlRow and pxlCol, if included, specify the

upper-left corner of the area to copy (defaults

are 0, 0).

width and height, if included, specify the

dimensions, in pixels, of the area. Defaults

are the width and height, in pixels, of the

current graph screen.

Store See ! (store), page 539.