Question: 1, Determine quarterly seasonal relatives using the centered moving average method b. Deseasonalize the sales. Year Quarter Sales 2018 1 225 2 272 3 233

1, Determine quarterly seasonal relatives using the centered moving average method

1, Determine quarterly seasonal relatives using

b. Deseasonalize the sales. Year Quarter Sales 2018 1 225 2 272 3 233 4 372 2019 1 215 2 260 3 A N 220 358 4 A car dealer wants to forecast quarterly sales for each quarter of 2022, based on the data shown below: Year Quarter Sales 2018 1 225 2 272 3 233 4 372 2019 1 215 2 260 3 220 4 358 2020 1 210 2 252 3 212 4 360 2021 1 200 2 250 210 3 4 340

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