SEASONAL Subcommand (PACF command)

Use SEASONAL to focus attention on the seasonal component by displaying and plotting autocorrelations only at periodic lags.

• There are no additional specifications on SEASONAL.
• If SEASONAL is specified, values are displayed and plotted at the periodic lags that are indicated on the PERIOD subcommand. If PERIOD is not specified, the periodicity that was established on the TSET or DATE command is used (see the PERIOD subcommand).
• If SEASONAL is not specified, partial autocorrelations for all lags (up to the maximum) are displayed and plotted.

Example

PACF VARIABLES = SALES
  /SEASONAL
  /PERIOD=12.

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