SEASON
SEASON
is available in SPSS® Statistics Professional Edition or 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.