Decomposition - Options
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Stat > Time Series > Decomposition > Options

Specify a customized title and the first observation in the seasonal period.

Dialog box items

Title: To replace the default title with your own custom title, type the desired text in this box. This title will be used for all three sets of plots.

First obs. is in seasonal period: Enter a number to specify a starting value. For example, if you have monthly data and the first observation is in June, then enter 6 to set the seasonal period correctly. By default, the starting value is 1 because Minitab assumes that the first data value in the series corresponds to the first seasonal period.