Operation Manual

12-18 Statistics
8212STAT.DOC TI-82, Chapter, English Bob Fedorisko Revised: 02/09/01 9:23 AM Printed: 02/09/01
12:42 PM Page 18 of 22
Statistical Plotting
You can plot statistical data that you have entered in lists. The types of plots
available include scatter plots, x-y lines, box-and-whisker plots, and histograms.
You can define up to three plots at a time.
Steps
1. Enter the stat data in list(s) (page 12
.
9 through 12
.
12 and Chapter 11).
2. Set up statistical calculations (page 12
.
13) and calculate the statistical
variables or fit the data to a model (page 12
.
14 through 12
.
17), if
desired.
3. Select or deselect
Y=
equations as appropriate (Chapter 3).
4. Define the stat plot (page 12
.
21).
5. Turn plot(s) on, if necessary (page 12
.
21).
6. Define the viewing
WINDOW
(page 12
.
21 and Chapter 3).
7. Display and explore the graph (Chapter 3).
Scatter Plot
Scatter
plots the data points from
Xlist
and
Ylist
as coordinate pairs,
showing each point as a box (
›), cross (
+
), or dot (
¦
).
Xlist
and
Ylist
must be
the same length. They can be the same list.
Freq
does not apply.
xyLine
xyLine
is a
Scatter
plot in which the data points are plotted and connected
in the order in which they appear in
Xlist
and
Ylist
. You may want to sort the
lists with
SortA(
or
Sort(D
before plotting.