³
TIp 6: Using Lists
Topics in Algebra 1 © 2001 Texas Instruments
³
TIp 6-1
³
TIp
é
6: Using Lists
You can enter lists of different kinds of data into the list editor. For example, let’s look at two
students’ test scores.
•
Jamal’s test scores are 80, 85, 90, 75, and 85.
•
Jian’s test scores are 85, 70, 75, 95, and 100.
You can create two separate lists in the list editor containing these scores. Then, on the Home
screen, you can find the sum of the elements of both lists, and then divide by the number of
elements (5) to calculate each student’s test average or mean.
Calculator Keys Used in This
³
TIp
é
•
-
|
(to access the
ClearAllLists
and
SetUpEditor
commands)
•
TI
-
83 Plus: y 9, …
•
TI
-
73:
3
,
-
v
³
TIp
é
Highlights
Both the TI
-
83 Plus and the TI
-
73 have two menus—
OPS
and
MATH
—that contain various list
commands that help you find mean, median, and much more. For more information on all menu
items, see the calculator guidebook.
TI
-
83 Plus:
y 9
"
"
TI
-
73:
-
v
"
"
In the
³
Try-It! example, you will use the
ClearAllLists
and
SetUpEditor
commands, which are
located in the
CATALOG
(
-
|
) on both the TI
-
83 Plus and the TI
-
73. These commands
clear and set up the list editor as described below.
•
ClearAllLists
erases all elements of all existing lists on your calculator. The list names are still
in memory, but the lists are empty. You cannot get the list elements back.
•
SetUpEditor
removes all list names from the list editor except the default list names,
L
1
through
L
6
. It also creates one blank list after
L
6
.
Note:
The examples in the next section assume that the calculator has been reset to the default settings as described in
³
TIp 1:
Resetting Your Calculator
.
L
1
lists Jamal’s
scores.
You can find the
mean or median on
the
Home screen.
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