Texas Instruments TI-83 Plus Manual Book page 186

³ Try-It!é on Your TI.83 Plus or TI.73
Find the Linear Regression for the Scatter Plot
Find the regression (the line which best fits the data) for
To Do This
1. Return to the Home screen, and clear
it.
2. Select LinReg(ax+b)
menu.
CALC
3. Select the lists
4. Display
Y-VARS
the Y variable (
menu.
FUNCTION
5. Calculate the regression equation.
6. Display the Y= editor.
Note: Both Y and Plot1 are highlighted. This
1
means that both graph and the plot are turned on.
Topics in Algebra 1
from the STAT
and .
L L
1 2
menu. Then select
) from the
Y
1
© 2001 Texas Instruments
TIp 8: Finding the Best Line of Fit for a Set of Data
(continued)
and using
L L
1 2
Press
- l :
TI-83 Plus:
... "
4:LinReg(ax+b)
TI-73:
- v !
5:LinReg(ax+b)
TI-83 Plus:
¡
y 9
1:L
1
¡
y 9
2:L
2
TI-73:
- v ¡
1:L
1
- v ¡
2:L
2
TI-83 Plus:
 ~
1:Function
1:Y
1
b
TI-73:
- }
2:Y-Vars
1:Y
1
b
&
.
LinReg(ax+b)
Display
(TI-83 Plus shown)
³ TIp 8-3