Data - Decomposition
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The time series must be in one numeric column. Minitab automatically omits missing data from the calculations.

The data that you enter depends upon how you use this procedure. Usually, decomposition is performed in one step by simply entering the time series. Alternatively, you can perform a decomposition of the trend model residuals. This process may improve the fit of the model by combining the information from the trend analysis and the decomposition. See Decomposition of trend model residuals .