Question
The demand and forecast of an item for five months are given in the table.
Month | Demand |
Forecast |
April |
225 |
200 |
May |
220 | 240 |
June | 285 | 300 |
July | 290 | 270 |
August | 250 | 230 |
The Mean Absolute Percent Error (MAPE) in the forecast is ___________ % (round off to two decimal places)
Month Demand Forecast April 225 200 May 220 240 June 285 300 July 290 270 August 250 230
Answer :
Correct answer is : 8.07
Period |
Actual Demand (Di) |
Forecasted Demand (Fi) |
Absolute Percentage Error Ei = (Di - Fi) |
April |
225 |
200 |
25 |
May |
220 |
240 |
-20 |
June |
285 |
300 |
-15 |
July |
290 |
270 |
20 |
August |
250 |
230 |
20 |
Mean Absolute Percentage Error (MAPE) :
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