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264 Chapter 16: Statistics and Data Plots
16STATS.DOC TI-89/TI-92 Plus: Statistics and Data Plots (English) Susan Gullord Revised: 02/23/01 1:12 PM Printed: 02/23/01 2:17 PM Page 264 of 22
From the Data/Matrix Editor:
1. Press
„
to display the
Plot Setup
screen.
Initially, none of the
plots are defined.
2. Move the cursor to
highlight the plot
number that you want
to define.
3. Press
ƒ
to define the
plot.
This example shows all
items as active. On your
calculator, items are
active only if they are
valid for the current
setting of
Plot Type
and
Use Freq and Categories?
4. Specify applicable settings for the active items.
Item Description
Plot Type
Select the type of plot. For descriptions, refer to
page 266.
Mark
Select the symbol used to plot the data points:
Box
(
›
),
Cross
(
x
),
Plus
(
+
),
Square
(
0
), or
Dot
(
ø
).
x
Type the column number in the Data/Matrix
Editor (
C1
,
C2
, etc.) used for
x
values, the
independent variable.
y
Type the column number used for
y
values, the
dependent variable. This is active only for
Plot Type
=
Scatter
or
xy
l
ine
.
Hist. Bucket
Width
Specifies the width of each bar in a histogram.
For more information, refer to page 267.
Use Freq and
Categories?
Select
NO
or
YES
. Note that
Freq
,
Category
, and
Include Categories
are active only when
Use Freq and Categories? = YES
. (
Freq
is active
only for
Plot Type
=
Box Plot
or
Histogram
.)
Defining a Statistical Plot
From the Data/Matrix Editor, you can use the entered data to
define several types of statistical plots. You can define up to
nine plots at a time.
Procedure
Note: This dialog box is
similar to the
Calculate
dialog box.
Note: If an item is not valid
for the current settings, it wil
l
appear dimmed. You cannot
move the cursor to a
dimmed item.
Note: Plots defined with
column numbers always us
e
the last data variable in the
Data/Matrix Editor, even if
that variable was not used
to create the definition.
Tip: To use an existing list
variable for x, y, Freq, or
Category, type the list name
instead of the column
number.
Pathname of the
data variable