Texas Instruments TI-83 PLUS - Manual (Page 684)

TI-83 Plus Tables and Reference Information 681
Function or Instruction/
Arguments
Result
Key or Keys/
Menu or Screen/Item
rref( matrix ) Returns the reduced row-echelon
form of a
matrix .
y
>
MATH
B:rref(
R 4 Pr( x , y ) Returns R, given rectangular
coordinates
x and y or a list of
rectangular coordinates.
y ;
ANGLE
5:R 4 Pr(
R 4 P q ( x , y ) Returns q , given rectangular
coordinates x and y or a list of
rectangular coordinates.
y ;
ANGLE
6:R 4 P q (
2 . Samp Ü Test [ listname1 ,
listname2 , freqlist1 ,
freqlist2 , alternative ,
drawflag ]
(Data list input)
Performs a two-sample Û test.
alternative = L 1 is <; alternative =0 is
ƒ ; alternative =1 is >. drawflag =1
draws results; drawflag =0 calculates
results.
† …
TESTS
D:2-Samp Û Test
2 . Samp Ü Test Sx1 , n1 ,
Sx2 , n2 [, alternative ,
drawflag ]
(Summary stats input)
Performs a two-sample Û test.
alternative = L 1 is <; alternative =0 is
ƒ ; alternative =1 is >. drawflag =1
draws results; drawflag =0 calculates
results.
† …
TESTS
D:2-Samp Û Test
2 . SampTInt [ listname1 ,
listname2 ,
freqlist1 , freqlist2 ,
confidence level , pooled ]
(Data list input)
Computes a two-sample t confidence
interval. pooled =1 pools variances;
pooled =0 does not pool variances.
† …
TESTS
0:2-SampTInt
2 . SampTInt v1 , Sx1 , n1 ,
v2 , Sx2 , n2
[, confidence level , pooled ]
(Summary stats input)
Computes a two-sample t confidence
interval. pooled =1 pools variances;
pooled =0 does not pool variances.
† …
TESTS
0:2-SampTInt