Abstract
This chapter presents a complete and detailed example of seasonal adjustment with the X-11 method. The series that is used in this example is a monthly series; it is in such cases that the softwares’ options are most numerous and complex. The series studied X t is the monthly index of industrial production in France between October 1985 and March 19951. The series is represented in the top panel of Figure 4.1, which gives a decomposition plot. The seasonal factors S t (Table D10) are graphed in the third panel, and, in the case at hand, the trading-day factors D t (Table C18) are provided in the fourth panel. These two sets of factors are used to compute the seasonally adjusted series A t (Table D11), which is shown with the original series in the top panel, and with the trend-cycle C t (Table D12) in the second panel. Finally, the irregular component I t (Table D13) is graphed in the bottom panel. It is obtained by removing the trend-cycle from the seasonally adjusted series.
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© 2001 Springer Science+Business Media New York
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Ladiray, D., Quenneville, B. (2001). The Various Tables. In: Seasonal Adjustment with the X-11 Method. Lecture Notes in Statistics, vol 158. Springer, New York, NY. https://doi.org/10.1007/978-1-4613-0175-2_5
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DOI: https://doi.org/10.1007/978-1-4613-0175-2_5
Publisher Name: Springer, New York, NY
Print ISBN: 978-0-387-95171-3
Online ISBN: 978-1-4613-0175-2
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