Article in Journal
Seasonal Adjustment in the Ifo Business Survey – Conversion to the X-13ARIMA-SEATS Procedure
Stefan Sauer, Klaus Wohlrabe
ifo Institut, München, 2015
ifo Schnelldienst, 2015, 68, Nr. 01, 32-42
ifo Institut, München, 2015
ifo Schnelldienst, 2015, 68, Nr. 01, 32-42
The seasonal adjustment is a fundamental component of the calculation of the results series of the Ifo Business Survey. The method used in this calculation will be converted as of January 2015 from the ASA-II procedure used to date to the X-13ARIMA-SEATS procedure widely used internationally. This article describes the basic concept, the partly changed characteristics of time series thanks to the conversion, and the advantages of the new process.
JEL Classification: C220