Question

In: Math

A company has developed a forecast using the Delphi method for January through June 1. Using...

A company has developed a forecast using the Delphi method for January through June

1. Using the data provided, what is the Mean Absolute Deviation for the forecast method?

2. Using the data provided, what is the MAPD?

Month

Demand

Forecast

January

232

234

February

225

222

March

239

240

April

260

261

May

234

231

June

260

262

Solutions

Expert Solution

Let's do calculation in excel:

Error = Actual value - Forecast value

1. Using the data provided, what is the Mean Absolute Deviation(MAD) for the forecast method?

MAD is the average of absolute error

So from the above output , MAD = 2

2. Using the data provided, what is the MAPD?

MAPD is the average of relative absolute errors ( |error| / actual *100 )

So from the above output , MAPD = 0.84%.

The formulae used on the above excel-sheet are as follows:


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