TI -86 用户手册

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Chapter 14: Statistics
199
14STATS.DOC   TI-86, Chap 14, US English   Bob Fedorisko   Revised: 02/13/01 2:33 PM   Printed: 02/13/01 3:04 PM   Page 199 of 14
14STATS.DOC   TI-86, Chap 14, US English   Bob Fedorisko   Revised: 02/13/01 2:33 PM   Printed: 02/13/01 3:04 PM   Page 199 of 14
middle. When three are plotted, the first one plots at the top, the second in the middle, and
the third at the bottom.
The STAT DRAW Menu     
- š )
CALC
EDIT
PLOT
DRAW
VARS
HIST
SCAT
xyLINE
BOX
MBOX
4
DRREG CLDRW DrawF
STPIC
RCPIC
HIST
Draws a histogram of one-variable data
SCAT
Draws a scatter plot of the data points
xyLINE
Draws the data points and a line connecting each point to the next point
BOX
Draws a box plot of the data points
MBOX
Draws a modified box plot of the data points
DRREG
(draw regression equation) Draws the current regression equation
CLDRW
(clear drawings) Displays the current graph with no drawings
DrawF
 expression (draw function) Plots expression as a drawing
STPIC
(store picture) Displays the picture variable 
Name=
 prompt; enter a valid variable
name, starting with a letter, and then press b to store the current picture
RCPIC
(recall picture) Displays the picture variable 
Name=
 prompt and menu; select or
enter a valid variable name, and then press b; the stored picture is redrawn
Forecasting a Statistical Data Value
Using the forecast editor, you can forecast an x-value or y-value based on the current
regression equation. To use the forecast editor, a regression equation must be stored to 
RegEq
.
When you select any of the
first five 
STAT
 
DRAW
 menu
items, the TI
-
86 plots the
data stored in the lists 
xStat
and 
yStat
.