User Guide

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Chapter 27
Curve Estim a
tion Save
Figure 27-6
Curve Estimation Save dialog box
Save Vari
ables.
For each selected model, you can save predicted values, residuals
(observed value of the dependent variable minus the model predicted value),
and prediction intervals (upper and lower bounds). The new variable names and
descrip
tive labels are displayed in a table in the output window.
Predict Cases. If you select Time instead of a variable in the working data file as the
independent variable, you can specify a forecast period beyond the end of the time
series.
You can choose one of the following alternatives:
 Predic
t from estimation period through last case.
Predicts values for all cases in the
file, based on the cases in the estimation period. The estimation period, displayed
at the bottom of the dialog box, is defined with the Range subdialog box of the
Select
Cases option on the Data menu. If no estimation period has been defined,
all cases are used to predict values.
 Predict through. Predicts values through the specified date, time, or observation
number, based on the cases in the estimationperiod.Thiscanbeusedtoforecast
value
s beyond the last case in the time series. The available text boxes for
specifying the end of the prediction period are dependent on the currently defined
date variables. If there are no defined date variables, you can specify the ending
obser
vation (case) number.
Use the Define Dates option on the Data menu to create date variables.