Texas Instruments TI-84 Plus Guide Book

Appendix A: Functions and Instructions 598
2-PropZTest(x1,n1,x2,n2
[,alternative,drawflag])
Computes a two-proportion
z test. alternative=
L1 is <;
alternative=0 is
ƒ;
alternative=1 is >.
drawflag=1 draws results;
drawflag=0 calculates
results.
†
…
TESTS
6:2-PropZTest(
Pt-Change(x,y) Reverses a point at (x,y).
y <
POINTS
3:Pt-Change(
Pt-Off(x,y[,mark]) Erases a point at (x,y) using
mark.
y <
POINTS
2:Pt-Off(
Pt-On(x,y[,mark]) Draws a point at (x,y) using
mark.
y <
POINTS
1:Pt-On(
PwrReg [Xlistname,
Ylistname,freqlist,
regequ]
Fits a power regression
model to Xlistname and
Ylistname with frequency
freqlist, and stores the
regression equation to
regequ.
…
CALC
A:PwrReg
Pxl-Change(row,column) Reverses pixel at
(row,column); 0
 row  62
and 0
 column  94.
y <
POINTS
6:Pxl-Change(
F
unction or
Instruction/Arguments Result
Key or
Keys/Menu or
Screen/Item

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-