Question: QUESTION THREE [25] The following table represents the 2020 forecast for Ndimanes Manufacturing: Month Actual Sales 2020 Forecast 2021 May 100 105 June 80 July

QUESTION THREE [25]

The following table represents the 2020 forecast for Ndimanes Manufacturing:

Month

Actual Sales 2020

Forecast 2021

May

100

105

June

80

July

110

August

115

September

105

October

110

November

125

December

120

3.1 Calculate the 2021 forecast for the months of June to December using the exponential smoothing method with a smoothing constant of = 0.2. (10)

3.2 Calculate the Mean Absolute Deviation (MAD) (8)

3.2 Compute the Mean Absolute Percentage Error (MAPE) (7)

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