Texas Instruments TI-73 Teachers Manual page 70

Probability and Statistics
4. Now enter the data into a list (
mean.
a. Display the List editor.
3
b. If necessary, clear
$ to highlight
: b
c. Starting from the first line in
(You'll get an error if
Remember to press b after each entry.
d. Find the mean of the data in
(1) Return to the Home screen.
- l
(2) Access the - v
mean .
- v " " [ (pastes
screen)
(3) Calculate the mean.
- v b (selects
E b
5. Ask students to analyze their data:
Was your mean from
the Home screen?
Did everyone find the same average foot size in their
survey? Why or why not?
Would our results be more accurate if we combined
the class data?
How can we combine the data?
Should we combine all the lengths and then find the
mean, or could we combine all the means and find
the mean of that? Would we get the same answer both
ways?
), and then find the
L
1
.
L
1
L
1
, enter each length.
L
1
is still highlighted.)
L
1
.
L
1
MATH menu and select
mean(
)
L
1
the same as the mean from
L
1
Activity 11: A Foot is a Foot – Or is It?
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EXAS
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