TI-83 Plus
Statistics
324
26. Press
s
. The regression line and the
scatter plot are displayed.
The new function y=.192x
.522
appears to fit the data well. To get more
information, examine a residual plot.
27. Press
o
to display the
Y=
editor.
Press
|
Í
to deselect
Y
1
.
Press
}
Í
to turn off plot 1. Press
~
Í
to turn on plot 2.
Note: Step 19 defined plot 2 to plot residuals
(
RESID
) versus string length (
L
1
).
28. Press
q
9
to select
9:ZoomStat
from the
ZOOM
menu. The window variables are
adjusted automatically, and plot 2 is displayed.
This is a scatter plot of the residuals.
The new residual plot shows that the residuals are random in sign, with
the residuals increasing in magnitude as the string length increases.
Summary of Contents for 83PL/CLM/1L1/V - 83 Plus Calc
Page 407: ...TI 83 Plus Inferential Statistics and Distributions 404 Input Calculated results Drawn results...
Page 412: ...TI 83 Plus Inferential Statistics and Distributions 409 Data Stats Input Calculated results...
Page 454: ...TI 83 Plus Applications 451 tvm_FV tvm_FV computes the future value tvm_FV PV PMT P Y C Y...
