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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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PACF 1189<br />

• If SEASONAL is specified, values are displayed and plotted at the periodic lags indicated on<br />

the PERIOD subcommand. If PERIOD is not specified, the periodicity established on the<br />

TSET or DATE command is used (see the PERIOD subcommand on p. 1188).<br />

• If SEASONAL is not specified, partial autocorrelations for all lags up to the maximum are<br />

displayed and plotted.<br />

Example<br />

PACF SALES<br />

/SEASONAL<br />

/PERIOD=12.<br />

• In this example, partial autocorrelations are displayed and plotted at every 12th lag.<br />

MXAUTO Subcommand<br />

MXAUTO specifies the maximum number of lags for a series.<br />

• The specification on MXAUTO must be a positive integer.<br />

• If MXAUTO is not specified, the default number of lags is the value set on TSET MXAUTO.<br />

If TSET MXAUTO is not specified, the default is 16.<br />

• The value on MXAUTO overrides the value set on TSET MXAUTO.<br />

Example<br />

PACF SALES<br />

/MXAUTO=14.<br />

• This command specifies 14 for the maximum number of partial autocorrelations that can<br />

be displayed and plotted for series SALES.<br />

APPLY Subcommand<br />

APPLY allows you to use a previously defined PACF model without having to repeat the<br />

specifications.<br />

• The only specification on APPLY is the name of a previous model enclosed in apostrophes.<br />

If a model name is not specified, the model specified on the previous PACF command is<br />

used.<br />

• To change one or more model specifications, specify the subcommands of only those<br />

portions you want to change after the APPLY subcommand.<br />

• If no series are specified on the PACF command, the series that were originally specified<br />

with the model being reapplied are used.<br />

• To change the series used with the model, enter new series names before or after the APPLY<br />

subcommand.

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