Statistics aplet
8-17
To connect the data points as
they are plotted, checkmark
CONNECT
in the second
page of the Plot Setup.
This is
not a regression curve.
Fitting a curve to 2VAR data
In the Plot view, press
. This draws a curve to fit the
checked two-variable data set(s). See “To choose the fit”
on page 8-12.
The expression in
Fit2
shows that the
slope=1.98082191781
and the
y
-
intercept=2.2657.
Correlation
coefficient
The correlation coefficient is stored in the
CORR
variable.
It is a measure of fit to a
linear
curve only. Regardless of
the Fit model you have chosen,
CORR
relates to the linear
model.
Relative Error
The relative error is a measure of the error between
predicted values and actual values based on the specified
Fit. A smaller number means a better fit.
The
relative error
is stored in a variable named
RELERR
.
The relative error provides a measure of fit accuracy for
all fits, and it
does
depend on the Fit model you have
chosen.
Summary of Contents for 39g+
Page 1: ...hp 39g graphing calculator user s guide H Edition 2 Part Number F2224 90001 ...
Page 62: ...2 22 Aplets and their views 5 Display the functions in numeric form ...
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