Texas Instruments TI-Nspire CAS User Manual

78 Alphabetical Listing
FTest_2Samp
Catalog >
FTest_2Samp List1,List2[,Freq1[,Freq2
[,Hypoth]]]
FTest_2Samp List1,List2[,Freq1[,Freq2
[,Hypoth]]]
(Data list input)
FTest_2Samp sx1,n1,sx2,n2[,Hypoth]
FTest_2Samp sx1,n1,sx2,n2[,Hypoth]
(Summary stats input)
Performs a two-sample Ftest. A summary
of results is stored in the stat.results
variable. (See page 172.)
For H
a
: σ1 > σ2, set Hypoth>0
For H
a
: σ1 ≠ σ2 (default), set Hypoth =0
For H
a
: σ1 < σ2, set Hypoth<0
For information on the effect of empty
elements in a list, see Empty (Void)
Elements, page 232.
Output variable Description
stat.F CalculatedF statistic for the data sequence
stat.PVal Smallest level of significance at whichthe null hypothesis can be rejected
stat.dfNumer numerator degrees of freedom = n1-1
stat.dfDenom denominator degrees of freedom = n2-1
stat.sx1, stat.sx2
Sample standard deviations of the data sequences inList1 and List2
stat.x1_bar
stat.x2_bar
Sample means of the data sequences in List1 and List2
stat.n1, stat.n2 Size of the samples
Func
Catalog >
Func
Block
EndFunc
Template for creating a user-defined
function.
Define a piecewise function:

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