HP 39gII, Руководство пользователя

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Statistics 2Var app 95
Correlation
Coefficient,
The correlation coefficient is stored in the variable r . It is
a measure of fit to a linear curve only. Regardless of the
fit model you have chosen, relates to the linear model.
The value of can range from -1 to 1, where -1 and 1
indicate best fits.
Coefficient of
Determination,
The Coefficient of Determination is a measure of the
goodness of fit of your model, regardless of whether that
model is linear or not. A measure of 1 indicates a perfect
fit.
H I N T
In order to access the and
R
2
variables after you plot a
data set, you must press
M
to access the numeric view
and then to display the correlation values. The
values are stored in the variables when you access the
Numeric view Stats page.
Plot setup
The Plot Setup (
S
SETUP
-
PLOT
) sets most of the same
plotting parameters as it does for the other built-in apps;
in addition, it has one unique setting:
Plotting mark
S1MARK
through
S5MARK
enables you to specify one of
five symbols to use to plot each data set. Press to
change the highlighted setting.
r
r
r
R
2
r