Price Forecasting with Time-Series
Methods and Nonstationary Data:
An Application to Monthly
U.S. Cattle Prices
Hector 0. Zapata and Philip Garcia
The forecasting performance of various multivariate as well as univariate ARIMA
models is evaluated in the presence of nonstationarity. The results indicate the
importance of identifying the characteristics of the time series by testing for types of
nonstationarity. Procedures that permit model specifications consistent with the
system's dynamics provide the most accurate forecasts.
Key words: Bayesian forecasting, cointegration, nonstationarity, prices, VARs.
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