Texas Instruments TI-Nspire CAS User Manual

192 Alphabetical Listing
TwoVar
Catalog >
An empty (void) element in any of the lists
X, Freq, or Category results in a void for
the corresponding element of all those lists.
An empty element in any of the lists X1
through X20 results in a void for the
corresponding element of all those lists. For
more information on empty elements, see
page 232.
Output variable Description
stat.v Mean of x values
stat.Σx
Sum of x values
stat.Σx2
Sum of x2 values
stat.sx Sample standard deviation of x
stat.σx
Population standard deviation of x
stat.n Number of data points
stat.w Mean of y values
stat.Σy
Sum of y values
stat.Σy
2
Sum of y2 values
stat.sy Sample standard deviation of y
stat.σy
Population standard deviation of y
stat.Σxy Sum of x•y values
stat.r Correlation coefficient
stat.MinX Minimum of x values
stat.Q
1
X 1st Quartile of x
stat.MedianX Median of x
stat.Q
3
X 3rd Quartile of x
stat.MaxX Maximum of x values
stat.MinY Minimum of y values
stat.Q
1
Y 1stQuartile of y
stat.MedY Median of y
stat.Q
3
Y 3rd Quartile of y

Texas Instruments TI-Nspire CAS Specifications

General

Type	Graphing
Cover	-
Form factor	Pocket
Control type	Buttons, Touch
Product color	Grey, Silver
Digits	- digits
Display tilting	No
Display resolution	320 x 240 pixels
Display number of lines	- lines
Compatible operating systems	Windows XP/2000\\r Mac OS X 10.4/10.5
Battery type	AAA
Power source	Battery
Number of batteries supported	4
USB port	Yes
USB 2.0 ports quantity	1
RAM capacity	16 MB
ROM capacity	20 MB

Weight and Dimensions

Depth	198.3 mm
Width	100 mm
Height	28.7 mm