Question: a. Determine quarterly seasonal relatives using the centered moving average method. b. Deseasonalize the sales. show the work please:) A car dealer wants to forecast

a. Determine quarterly seasonal relatives usinga. Determine quarterly seasonal relatives using the centered moving average method.

b. Deseasonalize the sales.

a. Determine quarterly seasonal relatives using

show the work please:)

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

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