SEASON

SEASON is available in the Forecasting option.

SEASON estimates multiplicative or additive seasonal factors for time series by using any specified periodicity. SEASON is an implementation of the Census Method I, otherwise known as the ratio-to-moving-average method.

SEASON VARIABLES= series names
 
 [/MODEL={MULTIPLICATIVE**}] 
         {ADDITIVE        }
 
 [/MA={EQUAL   }]
      {CENTERED}
 
 [/PERIOD=n]
 
 [/APPLY [='model name']]

**Default if the subcommand is omitted.

This command reads the active dataset and causes execution of any pending commands. See the topic Command Order for more information.

Syntax for the SEASON command can be generated from the Seasonal Decomposition dialog.

Example

SEASON VARIABLES = VARX
  /MODEL=ADDITIVE.