Seasonal decomposition of time series using STL and MSTL methods

Description

[tsa] seasonal decomposition of time series using STL and MSTL methods

Examples:

Decomposition of the dataset "Airline Passengers" using STL:

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The de-seasonalized result can be calculated via a formula in the spreadsheet by using the result data for the seasonal component and subtracting it from the original data: image

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Decomposition of a "toy dataset" using MSTL with two periods: (taken from https://www.statsmodels.org/stable/examples/notebooks/generated/mstl_decomposition.html) image

Conformity

Edited by Alexander Semke

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