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66
Using the TI-73: A Guide for Teachers
Probability and Statistics
© 1998 T
EXAS
I
NSTRUMENTS
I
NCORPORATED
6. Combine the class data by either combining the
individual foot lengths and finding the mean or by
averaging the individual means. (It may be beneficial
for students to do it both ways so students can see if
the same answer comes up both ways).
7. Now enter the combined data into a list (
L
2
), and then
find the mean.
a. Display the List editor.
3
b. If necessary, clear
L
2
.
$ to highlight
L
2
: b
c. Starting from the first line in
L
2
, enter each length.
(You’ll get an error if
L
2
is still highlighted.)
Remember to press b after each entry.
d. Find the mean of the data in
L
2
.
(1) Return to the Home screen.
- l
(2) Access the - v
MATH
menu and select
mean
.
- v " " [ (pastes
mean(
to the Home
screen)
(3) Calculate the mean.
- v Z (selects
L
2
)
E b