Texas Instruments TI-73 EXPLORER - Manual (Page 91)

Chapter 5: Lists
85
7305ENG.DOC CH 5 Lists, English Julie Hewlett Revised: 07/29/98 12:04 PM Printed: 05/19/99 8:59 AM Page
85 of 30
6. Change M 5
in ¨ CEL
to M 8
.
! # # b a
8
b
Note: Since the formula is enclosed
in quotation marks, element 3 in
¨
FRHT is automatically updated.
Categorical Lists
Categorical lists usually contain words or letters (text
elements). If they contain numerical elements, the numerical
values of those elements are ignored. Categorical lists are
usually used in statistical plotting, but they can allow you to
label elements as explained in the following example. See
Chapter 6: Statistical Plots for details about using categorical
lists in stat plots.
To define a categorical list, enclose the first element in
quotation marks (found in the Text editor). Quotation marks
are optional on the remaining text elements. A categorical list
signifier,
c
, appears next to the list name.
A math class has 4 test scores: 2 tests, 1 midterm test, and 1
final exam. Ivan earned test scores of 85, 80, 74, and 82. Karen
earned test scores of 90, 85, 92, and 79. Reflect this
information in the List editor.
³
¨TEST={TEST1,TEST2,MDTRM,FINAL}
¨IVAN={85,80,74,82}
¨KAREN={90,85,92,79}
1 Categorical
2 Numerical