# To predict 24 values of the accidental deaths series using the Holt–Winters algorithm, open the file…

To predict 24 values of the accidental deaths series using the Holt–Winters algorithm, open the file DEATHS.TSM and select Forecasting>Holt-Winters. In the resulting dialog box specify 24 for the number of predictors and check the box marked Optimize coefficients for automatic selection of the smoothing coefficients *α *and *β*. Click OK, and the forecasts will be plotted with the original data as shown in Figure 9.2. Right-click on the graph and then Info to see the numerical values of the predictors, their root mean squared errors, and the optimal values of *α *and *β*.

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To predict 24 values of the accidental deaths series using the Holt–Winters algorithm, open the file…

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