test for seasonality

[podarum]

Anyone know what is the best way to do seasonality tests in SAS.  Thanks

[PGStats]

Seasonality is mostly tested for time series data. You should read about SAS-ETS - Overview of the Time Series Forecasting System

http://support.sas.com/documentation/cdl/en/etsug/63348/HTML/default/viewer.htm#tfintro_toc.htm

also look at proc SPECTRA for an alternate way of detecting seasonality.

SAS-ETS is a separate product from SAS-STAT.

PG

[podarum]

I am using SAS/ETS, as the data I'm looking at is a time series..

[udo_sas]

Hello -

You might be interested in this SAS Global Forum paper: http://www.lexjansen.com/wuss/2004/posters/c_post_alternative_seasonali.pdf, featuring PROC X12.

In addition this example might be useful: http://support.sas.com/rnd/app/da/new/801ce/ets/chap5/sect21.htm

Thanks,

Udo