Question: Weekly demand data for a product is provided for 15 historical weeks below. Week 1 2 3 4 5 6 7 8 9 10 11

Weekly demand data for a product is provided for 15 historical weeks below.

Week 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Demand 186 303 501 423 217 394 468 648 464 355 403 592 846 790 493

The forecasting team observes the data exhibits seasonality with a period of 5 weeks. They deseasonalize the data, run a regression on the deseasonalized data to get an estimate of level and trend, then compare the result with the historical demand to estimate the following seasonal factors:

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