Texas Instruments TI-83 PLUS - Manual (Page 326)

TI-83 Plus Statistics 323
23. Press q
9 to select 9:ZoomStat from the
ZOOM
menu. The window variables are
adjusted automatically, and the original scatter
plot of time-versus-length data (plot 1) is
displayed.
24. Press … ~ ƒ [
A
] to select A:PwrReg
from the
STAT CALC
menu. PwrReg is pasted to
the home screen.
Press y d ¢ y e ¢ . Press  ~
1 to
display the
VARS Y . VARS FUNCTION
secondary
menu, and then press 1 to select 1:Y 1
. L 1
, L 2
,
and Y 1
are pasted to the home screen as
arguments to PwrReg .
25. Press Í to calculate the power regression.
Values for a and b are displayed on the home
screen. The power regression equation is
stored in
Y 1
. Residuals are calculated and
stored automatically in the list name RESID .