43 Homework Help8.4: (a) forecasts using 3 methods. (b) compare forecasts using MAD. (c) choose the “best” method and forecast July.8.7: use 3 methods to forecast and use MAD and MSE to compare. (notes: will not have forecasts for all periods using 3-period MA; use actual for period 1 as forecast to start exp smoothing.8.10: determine seasonal indices for each day of the week, and use them to forecast week 3.8.12: simple linear regression (trend) model.NOTE: Spreadsheets might be very useful for working these problems.
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