SPSS Trends is a comprehensive forecasting and time series tool with multiple curve fitting models, smoothing models and methods for estimating autogressive functions. The Trends option enables you to use powerful ARIMA modeling techniques, including XILARIMA, and four other state-of-the-art estimation procedures. This book documents the operations of the SPSS Trends option. Numerous chpaters provide real-world applications to help you get started and illustrate the many different facilities available for modeling and predicting time series. If you are already familiar with time series analysis, a reference section outlines the command syntax in detail and provides you with brief examples of each command.