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272 Chapter 16: Statistics and Data Plots
16STATS.DOC TI-89/TI-92 Plus: Statistics and Data Plots (English) Susan Gullord Revised: 02/23/01 1:12 PM Printed: 02/23/01 2:17 PM Page 272 of 22
When you collect data with the CBL 2/CBL, that data is initially
stored in the CBL 2/CBL unit itself. You must then retrieve the data
(transfer it to the
TI
-
89 / TI
-
92 Plus
) by using the
Get
command, which
is described in Appendix A.
Although each set of retrieved data can be stored in several variable
types (list, real, matrix, pic), using list variables makes it easier to
perform statistical calculations.
When you transfer the collected information to the
TI
-
89 / TI
-
92 Plus
,
you can specify the list variable names that you want to use. For
example, you can use the CBL 2/CBL to collect temperature data
over a period of time. When you transfer the data, suppose you store:
¦
Temperature data in a list variable called
temp
.
¦
Time data in a list variable called
time
.
After you store the CBL 2/CBL information on the
TI
-
89 / TI
-
92 Plus
,
there are two ways to use the CBL 2/CBL list variables.
When you perform a statistical calculation or define a plot, you can
refer explicitly to the CBL 2/CBL list variables. For example:
If You Have a CBL 2/CBL or CBR
The Calculator-Based Laboratory
é
System (CBL 2
é
/CBL™)
and Calculator-Based Ranger
é
System (CBR
é
) are optional
accessories, available separately, that let you collect data from
a variety of real-world experiments. TI
-
89 / TI
-
92 Plus
CBL 2/CBL and CBR programs are available from the TI web
site at: http://www.ti.com/calc/cbl and http://www.ti.com/calc/cbr
How CBL 2/CBL
Data Is Stored
Note: For specifics about
using the CBL 2/CBL and
retrieving data to the
TI
-
89 / TI
-
92 Plus
, refer to
the guidebook that comes
with the CBL 2/CBL unit.
Referring to the
CBL 2/CBL Lists
Type the CBL list
variable name instead
of a column number.