TI-84 Plus and Silver Edition Manual
Appendix A: Tables and Reference Information 147
ZBox Displays a graph, lets you 
draw a box that defines a 
new viewing window, 
and updates the window.
† q
ZOOM 
1:ZBox
ZDecimal
Adjusts the viewing 
window so that @X=0.1 
and @
Y=0.1, and displays 
the graph screen with the 
origin centered on the 
screen.
† q
ZOOM
4:ZDecimal
ZInteger
Redefines the viewing 
window using these 
dimensions: 
@
X=1 Xscl=10
@Y=1 Yscl=10
† q
ZOOM
8:ZInteger
ZInterval
 s[,listname,
freqlist,confidence level]
(Data list input)
Computes a z confidence 
interval.
† …
TESTS 
7:ZInterval
ZInterval
 s,v,n
[,confidence level]
(Summary stats input)
Computes a z confidence 
interval.
† …
TESTS 
7:ZInterval
Zoom In
Magnifies the part of the 
graph that surrounds the 
cursor location.
† q
 ZOOM
2:Zoom In
Zoom Out
Displays a greater portion 
of the graph, centered on 
the cursor location.
† q
ZOOM
3:Zoom Out
ZoomFit
Recalculates Ymin and 
Ymax to include the 
minimum and maximum 
Y values, between Xmin 
and Xmax, of the 
selected functions and 
replots the functions.
† q
ZOOM
0:ZoomFit
ZoomRcl
Graphs the selected 
functions in a user-
defined viewing window.
† q
MEMORY
3:ZoomRcl
Function or Instruction/ 
Arguments
Result
Key or Keys/Menu 
or Screen/Item










