Brief Users Guide to List
Arithmetic for the
TI-83 Plus/TI-84

Content:
This document covers the arithmetic operations that can be performed on lists.
List arithmetic is a powerful tool for doing

the extensive arithmetic often included in basic statistics courses.

**INDEX:
**

To facilitate lookup, the instructions are divided into
the following categories:

**I.
Entering the List Tables - **Getting to the list tables,

**II. Clearing
a list - **easily clear a list from the list tables,

**III. Entering Data - **
enter data in a the list tables,

**IV. Square a list - **
Square each element of a list and store the result in another list,

** V. Multiplying two lists–**

**VI. Getting the sum of lists –
**

**VII. Getting the sum of multiple
lists -**

*RELEASE DATE: 2/16/11 DATE LAST REVISED:
2/16/11*

© 2011
Frank Kizer
NOTE: Copying restrictions and printing hints are at the end of this document.

**General: **The arithmetic of lists is a very
powerful tool, especially for elementary statistics taught by those

who choose to go into detailed calculations of variance, standard deviation, and
regression analysis. The calculators

mentioned in the title can be used to perform all of the basic mathematical
operations on all of the elements of a

a list or of two lists. Obviously, such operations as squaring all
elements or multiplying the elements of one list

by those of another, and even adding the elements of a list can save
considerable time. That save time can be

used to learn important procedures rather than practicing arithmetic.

**I. **__Accessing List
Tables:__
Press STAT, ENTER and the lists will be displayed.

__II.
Clearing a list:__
Move the cursor so that the name is highlighted and press CLEAR, then ENTER.
See Figure 1 below.

Figure 1: Clearing a list.

**III. **__Entering Data:__
Position the cursor where you want to enter data, enter the number, and
press ENTER.

**IV****. ****Squaring
the numbers in a list:** Suppose we want to square the numbers in L_{1} and store the
results in L_{3}. First position the cursor so that the name of the

destination list is highlighted (L_{3} in this example.).
Next press 2^{ND}, L1,x², ENTER. The operation will be displayed at the
bottom of the screen. (See Figure 2 below.)

Press ENTER to store the numbers in L_{3}.

Figure 2. Storing squared L_{1} values
in L_{3}.

** **__Ex: 2 Square L___{2} and store
in L_{4}: Move the cursor to highlight the name of list L_{4}.
Press 2^{nd}, L_{2}, x². (See Figure 3 below.) Press ENTER to
store the

squared data in L_{4}. __ __

__
__

Figure 3. Square y-values and store in L_{4}.

**
V. **__Multiplying two lists:__** **
Suppose we want to multiply two lists, for example “x” in L_{1} times y
in L_{2, }and store the results in L_{5}. Move the cursor so
that

the name for L_{5} is highlighted. Press
2^{nd}, L_{1},x (multiply
sign),2^{nd}, L_{2}. (See Figure 4 below.) Now press ENTER and
the products will be stored in L_{5}

Figure 4: Multiplying L_{1} times L_{2}.

VI. __Getting the sum of
a list:__ You must first get out of the
list Edit function by pressing 2^{nd}, QUIT (the MODE key). The list
menu will be displayed. Move

the cursor over to MATH (see figure 5 below) and press 5 to paste “sum(“ to the
home screen. (See Figure 6 below.) Now, press 2^{nd}, L_{1 }
(the number 1 key),

and ENTER. The sum will be displayed as in Figure 6 below.

__
Figure 5:___{ }
Display of list MATH menu.

Figure 6: Display of sum(L_{1}.

**VII. ****Getting
the sums of the remaining lists:**
You need not go through all of the steps again. Merely
press 2^{nd}, ENTER to redisplay the entry for the

sum of L_{1}. Now, position the cursor so that L_{1} is
highlighted and press 2^{nd}, L_{2 }. Press ENTER to get the
sum of L_{2}. Repeat these steps for each list. Part

of the final screen is displayed in Figure 6 below.

Figure 6: Repeated summing of
lists by re-displaying and editing a summation.

**
****
Making it Better: **I
would be grateful if you would report any errors or suggestions for improvements
to me. Just click "E-mail Webmaster," site the item

number, and tell me
your suggested change.

**
****
Printing Hint:
**
Most browsers will send both the navigation bar and the text to
the printer, and, as a result, some printers will cut off the right edge of this document

if the file is printed directly. To prevent this,
you can use landscape, of course. But if you'd like to get rid of
the navigation panel, highlight the
instructions portion

only (not the navigation panel) and check "Selection" on
the Print dialog box; then click "Apply." This will eliminate the
navigation panel and get all of the instructions

on the printed pages.
Some newer printers have a special Web Page function for printing that will
print the page without cutting part of it off.

**
Copy Restrictions:
**You
may make single copies of this document for your own personal use and for the
use of other students, but inclusion in another document,

publication, or any use
for profit requires my permission. Teachers may make multiple copies of this
document for their students if they first get my permission.

Merely send
me an email (Just click on Webmaster in the navigation bar.) with a one-sentence
explanation of what you’re using the document for. I’ll give you

permission in
a timely manner.