
Chapter 16
PB
Time Series and Index Numbers
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16.14.1 Using Minitab for Decomposition
In order to use Minitab click Stat/Time Series/Decomposition. The Decomposition dialog box
will appear on the screen (Figure 16.45). Place Production in the Variable box and place 4 in
the Seasonal length box. From the “Model Type”, select Multiplicative and from “Model
Components”, select Seasonal only. Click the Time button. The Decomposition-Time dialog
box will appear on the screen (Figure 16.46). From this dialog box, select Stamp and place
Quarter in the Stamp box. Click OK, the Decomposition dialog box will reappear on the
screen.
Click Options in ...