Operation Manual

14-2 Applications
8214APPS.DOC TI-82, Chapter 14, English Bob Fedorisko Revised: 02/09/01 9:27 AM Printed:
02/09/01 12:43 PM Page 2 of 20
Left-Brain, Right-Brain Test Results
An experiment found a significant difference between the ability of boys and girls
to identify objects held in their left hands (which are controlled by the right side
of the brain) versus their right hands (which are controlled by the left side of the
brain). The TI Graphics team decided to conduct a similar test for adult men and
women.
Problem
30 small objects were chosen. Coworkers held half of the objects (which
they were not allowed to see) in their left hands and half in their right
hands and tried to identify them. Use box plots to compare visually the
results from the table below.
Correct Responses
Women
Left
Women
Right
Men
Left
Men
Right
84712
9386
12 7 7 12
11 12 5 12
10 11 7 7
811 811
12 13 11 12
712 4 8
9111012
11 12 14 11
13 9
59
Procedure
1. Press
…
1
(to select
Edit...
). If there are values in any of the lists,
follow the procedure to clear lists described in Chapter 12. Enter the
values for the number of correct guesses each woman made with her
left hand in
L
1
.
2. Press
~
to move to
L
2
and enter the scores that each woman made with
her right hand.
3. Enter the men’s scores in
L
3
and
L
4
.
4. Press
y
ã
STAT PLOT
ä
1
(to select
Plot1
). Turn on
Plot1
and define it as
a box plot, using
L
1
. Press
y
ã
STAT PLOT
ä
2
(to select
Plot2
). Turn on
Plot2
and define it as a box plot, using
L
2
.
5. Press
o
and turn off any selected functions. Press
p
. Set
Xscl=1
,
Ymin=0
,
Yscl=0
. (Ignore the other
WINDOW
settings, which will be set
by
ZoomStat
.)