HP 39g+, Руководство пользователя

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Statistics aplet 8-15
Plotting
You can plot:
•
histograms ( )
•
box-and-whisker plots ( )
•
scatter plots ( ).
Once you have entered your data ( ), defined your
data set ( ), and defined your Fit model for two-
variable statistics (
SETUP
-
SYMB
), you can plot your
data. You can plot up to five scatter or box-and-whisker
plots at a time. You can plot only one histogram at a time.
To plot statistical
data
1. In Symbolic view ( ), select ( ) the data
sets you want to plot.
2. For one-variable data ( ), select the plot type in
Plot Setup (
SETUP
-
PLOT
). Highlight
STATPLOT
,
press , select either
Histogram
or
BoxWhisker
, and press .
Σ
Y2
Sum of
y
2
-values.
Σ
XY
Sum of each
xy
.
SCOV
Sample covariance of independent
and dependent data columns.
PCOV
Population covariance of
independent and dependent data
columns
CORR
Correlation coefficient of the
independent and dependent data
columns
for a linear fit only
(regardless of the Fit chosen).
Returns a value from 0 to 1, where
1 is the best fit.
RELERR
The relative error for the selected
fit. Provides a measure of accuracy
for the fit.
Statistic Definition (Continued)