Operation Manual

Statistics 12-9
8212STAT.DOC TI-82, Chapter, English Bob Fedorisko Revised: 02/09/01 9:23 AM Printed: 02/09/01
12:42 PM Page 9 of 22
Setting Up a Statistical Analysis
The data for statistical analyses is stored in lists. The TI
.
82 has six list variables
in memory that you can use in stat calculations. Several types of statistical
analyses are available.
Steps
1. Enter the stat data in list(s) (pages 12
.
9 through 12
.
12).
2. Set up statistical calculations (page 12
.
13).
3. Calculate the statistical variables or fit the data to a model (page 12
.
14
through 12
.
17).
4. Plot the data (page 12
.
18 through 12
.
21).
Displaying the STAT List Editor
To display the
STAT
list editor, press
…
and then press
1
or
Í
to
select
Edit...
from the
STAT EDIT
menu.
The top line displays the names of the lists (even if the list is empty). The
center portion of the
STAT
list editor displays up to seven elements of three
lists, showing the values of the elements in abbreviated form if necessary.
The full value of the current element (indicated by the rectangular cursor)
is shown on the bottom line.
Leaving the STAT List Editor
To leave the
STAT
list editor:
¦
Select another screen by pressing the appropriate key.
¦
Press
y
ã
QUIT
ä
to return to the Home screen.
Deleting a List
You can delete the contents of a list in several ways:
¦
Use the
ClrList
instruction (page 12
.
12).
¦
Through the
MEM
menu (Chapter 16).
¦
In the
STAT
editor, press
}
to move onto the list name, and press
‘ Í
.
¦
In the
STAT
editor, delete each element.
¦
On a command line, enter
0
!
dim
listname
.