The following are the data regarding quarterly sales: Quarters Sales 1 500 2 350 3 250...

The following are the data regarding quarterly sales:

Quarters	Sales
1	500
2	350
3	250
4	400
5	450
6	350
7	200
8	300
9	350
10	200
11	150
12	400

Find the forecast value of the sales for each quarter starting with Quarter 6, by using a 4-quarter moving average.

Evaluate this forecasting method using MAD.

Evaluate this forecasting method using MSE.

Evaluate this forecasting method using MAPE.

Evaluate this forecasting method using MPE.

Use exponential smoothing with a smoothing constant of 0.2 and an initial value of 500 to forecast the sales for Quarter 1.

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keosha answered 1 year ago

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