Entering Data; Editing Data - Texas Instruments TI-82 Manual

You can find function values by evaluating outputs on the
home screen or using the table.
&
1.4 Linear Functions and Models
Actual real-world data is used throughout Calculus Concepts. It is necessary that you use
your calculator to find a curve that models the data. Be very careful when you enter t h e
data in your calculator because your model and all of your results depend on the values t h a t
you enter!

1.4.1 ENTERING DATA

see the first three lists, L
with . (In this text, we usually use list L
data.) If there are any data values in your lists, see 1.4.3 of this Guide and first delete any
ÒoldÓ data. (TI-83 Note: If you do not see L
instructions at the beginning of this Guide.)
Enter the following data:
Y e a r
Tax
Position the cursor in the first location in list L
the x-data into list L
bottom in the L
entry.
After typing the L
top of list L . Enter the y-data into list L
2
the entries from top to bottom in the L
after each entry.
ENTER

1.4.2 EDITING DATA

value you wish to correct and type the correct value. Press
¥ To insert a data value, put the cursor over the value that will be directly below the one
you will insert, and press
move down one location and a 0 is filled in at the insertion point. Type the data value to
be inserted over the 0 and press
¥ To delete a single data value, move the cursor over the value you wish to delete, and
press . The values in the list below the deleted value move up one location.
DEL
Copyright © Houghton Mifflin Company. All rights reserved.
Press
STAT 1
, L , and L , but you can access the other three, L
1 2 3
1992 1993
2541 3081
by typing the entries from top to
1
column, pressing
1 ENTER
) value, 1997, use
(
1
5
2
If you incorrectly type a data value, use the cursor keys to darken t h e
2nd DEL
ENTER
( ) to access the six lists that hold data. You only
EDIT
for the input data and list L
1
, L , and so forth, return to the statistical setup
1 2
1994 1995
3615 4157
. Enter
1
after each
to go to the
by typing
2
column, pressing
ENTER
( ) . The values in the list below the insertion point
INS
. The 0 is replaced with the new value.
Chapter 1
, L , and L
4 5
for the output
2
1996 1997
4703 5242
.
A-21
,
6