Question: Correct this bias by performing a Double Moving Average method with four periods and plot the errors of DMA ( 4 ) . Calculate its

Correct this bias by performing a Double Moving Average method with four periods
and plot the errors of DMA(4). Calculate its MAD, MAPE, MSE, RMSE, and MPE
and compare with simple MA(4) forecast. Make a forecast for period 26(one period
beyond the sample) using DMA(4).
2

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