Adjustment of Economic Time Series for Outliers, Seasonal, and Calendar Effects
Gerhard Thury and
Michael Wüger Additional contact information Gerhard Thury: WIFO
Michael Wüger: WIFO
Authors registered in the RePEc Author Service: Michael Wueger
Abstract:
The article tests a procedure for spotting and eliminating statistical outliers in economic time series which does not require previous information on the location of outliers and which estimates model parameters and outliers simultaneously. Results for three different time series suggest that this approach may be an alternative to intervention models. Furthermore, allowing for calendar and outlier effects significantly reduces the variance of model-based seasonal adjustment procedures and may prove clearly superior to conventional empirical-technical methods (Census X-11).
Ordering information: This journal article can be ordered from Austrian Institute of Economic Research c/o Christine Kautz P.O. Box 91 A-1103 Vienna/Austria