Texas Instruments TI-73 EXPLORER - Manual (Page 104)

98
Chapter 5: Lists
7305ENG.DOC CH 5 Lists, English Julie Hewlett Revised: 07/29/98 12:04 PM Printed: 05/19/99 8:59 AM Page
98 of 30
Select( Select( - v " 6 6
This instruction is used to select a certain portion of an
existing Scatter or xyLine stat plot, both of which contain an
XList and a YList. Before you can use
Select(
, you must define
and select (turn on) the statistical plot you want to use;
otherwise, you get an error message. For a detailed
explanation on setting up Scatter and xyLine plots, see
Chapter 6: Statistical Plots.
From the Home screen, enter
Select(
followed by two list
names, XList and YList. These list names are where you want
to store the selected data points. All X-values are stored in the
first list and all Y-values are stored in the second list.
XList and YList can be the same two lists as the ones which
set up the stat plot, or you can enter new list names. If you
choose to enter new list names, entering the list signifier ( ¨ )
(found under the - v
OPS
menu) is optional. Enter the
new list names using the Text editor (- t).
Select(
XList,YList
)
The calculator displays the stat plot and prompts you to select
the left and the right bounds. The calculator then plots the
selected points on the Graph screen for you to see. If desired,
you can enter the List editor to see the lists with the selected
data points.
The following example shows the steps you would follow
when selecting a statistical plot. The data is acquired from a
sample statistical xyLine plot. ¨ TIME
contains 94 X-values; ¨ DIST
contains 94 Y-values.
The example selects the first portion of the graph before
Distance=0 and stores the selected X-values in ¨ NEWT
and the
selected Y-values in ¨ NEWD
.
1. Display the graph or stat
plot and determine the data
points you want to select.
*