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Seasonal Adjustment

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Abstract

The main objective of seasonally adjusted time series is to provide easy access to a common time series data-set purged of what is considered seasonal noise. Although the application of officially seasonally adjusted data may save costs, it may also imply less efficient use of the information available, and data may be distorted. Hence, in many cases, seasonality may need to be treated as an integrated part of an econometric analysis. In this article we present several ways to integrate seasonal adjustment into econometric analysis in addition to applying data adjusted by the two most popular adjustment methods.

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Acknowledgment

The author is grateful for helpful comments from Niels Haldrup and Steven Durlauf.

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Hylleberg, S. (2018). Seasonal Adjustment. In: The New Palgrave Dictionary of Economics. Palgrave Macmillan, London. https://doi.org/10.1057/978-1-349-95189-5_2408

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