In a general time series, the mean function is a totally arbitrary function of time. In a stationary time series, the mean function must be constant in time. Frequently we need to take the middle ground and consider mean functions that are relatively simple (but not constant) functions of time. These trends are considered in this chapter.
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© 2008 Springer Science+Business Media, LLC
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(2008). Trends. In: Time Series Analysis. Springer Texts in Statistics. Springer, New York, NY. https://doi.org/10.1007/978-0-387-75959-3_3
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DOI: https://doi.org/10.1007/978-0-387-75959-3_3
Publisher Name: Springer, New York, NY
Print ISBN: 978-0-387-75958-6
Online ISBN: 978-0-387-75959-3
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