Select an alternative from the Trend Component group:
P None.Theserieshasnooveralltrend.
P Linear.Themeanleveloftheseriesincreasesordecreaseslinearlywithtime.
P Exponential. The mean level of the series increases or decreases exponentially with time.
P Damped.Themeanleveloftheseriesincreasesordecreaseswithtime,buttherateof change declines.
If you have defined the periodicity of your data with Define Dates on the Data menu, you can also specify a Seasonal Component:
P None. The series has no variation at the seasonal periodicity specified in Define Dates.
P Additive.Theserieshasseasonalvariationthatisadditive—themagnitudeofseasonal variation does not depend on the overall level of the series.