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SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

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<strong>Reference</strong>s<br />

EXSMOOTH 545<br />

• The first command uses a model with no trend and additive seasonality model with alpha<br />

set to 0.2 and delta set to 0.4. Initial start and trend values of 114 and 20 are specified.<br />

• The second command applies the previous model and parameter values to a new variable,<br />

VAR4, but without the initial starting values. The initial starting values will be calculated<br />

by EXSMOOTH.<br />

Abraham, B., and J. Ledolter. 1983. Statistical methods of forecasting. New York: John Wiley &<br />

Sons.<br />

Gardner, E. S. 1985. Exponential smoothing: The state of the art. Journal of Forecasting 4: 1–28.<br />

Ledolter, J., and B. Abraham. 1984. Some comments on the initialization of exponential smoothing.<br />

Journal of Forecasting 3: 79–84.<br />

Makridakis, S., S. C. Wheelwright, and V. E. McGee. 1983. Forecasting: Methods and applications.<br />

New York: John Wiley & Sons.

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