Texas Instruments TI-73 EXPLORER 用户手册
Chapter 7: Statistical Analyses
145
7307ENG.DOC CH 7, Statistical Analyses, English Julie Hewlett Revised: 07/29/98 12:07 PM Printed: 05/19/99
9:00 AM Page 145 of 22
Graph a scatter plot for
L
1
and
L
2
, where
L
1
={1,3,4,5,5,7,8,9}
and
L
2
={1,4,2,3,4,6,7,9}
, and use
QuadReg
to draw the quadratic
regression curve through the points.
1. Set Decimal Notation mode
to
2
, if desired.
. # " " " b
2. After entering the lists,
define
Plot1
as a scatter plot
using
L
1
and
L
2
, as shown to
the right.
- e
For more information on defining Stat
plots, see Chapter 6: Statistical Plots.
3. Turn off
Y
2
,
Y
3
and
Y
4
, if they
have been previously
defined and selected.
- l :
- }
- }
2
6
2
¡
3
¡
4
b
4. Find the
QuadReg
curve, and
store the results to
Y
1
.
- l :
- v !
- v !
6
- }
2
1
b
Specifying
¨
1 and
¨
2 is optional since
they are the default
listnames.
However, if you were using other list
names, you would have to enter them
before the
Yn variable.
5. View the curve on the
Graph screen.
(
6
³