Texas Instruments TI-83-Plus Guide Book

³
TIp 6: Using Lists
Topics in Algebra 1 © 2001 Texas Instruments
³
TIp 6-4
³
Try-It!
é
on Your TI
.
83 Plus or TI
.
73
(continued)
Display the Sum and Average of All Elements in a List
On the Home screen, find the sum of Jian’s test scores (
L
2
).
To Do This Press Display
(TI-83 Plus shown)
1. Return to the Home screen and clear
the current line, if needed.
Tip:
Once you exit the application, you can press
y 5
to return to the Home screen from any
menu or command.
y 5
:
2. Select
sum(
from the
MATH
menu.
TI
-
83 Plus:
y 9
" "
5:sum(
TI
-
73:
- v " "
7:sum(
3. Select the list (
L
2
) you want, and
display the sum.
TI
-
83 Plus:
y 9
2:L
2
E
b
TI
-
73:
- v
2:L
2
E
b
4. Divide
L
2
by 5 (the number of test
scores) to find the average (or mean)
of the list of the scores.
Note
:
Ans
is the previous
answer
, 425.
F
5
b
Ans
= 425

Texas Instruments TI-83-Plus Specifications

General

Brand	Texas Instruments
Model	TI-83-Plus
Category	Calculator
Language	English