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Mathematics

MAT540 Week 4 Homework

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Carpet City
Month Demand for Soft Shag Carpet (1,000 yd.)
3 mos moving average
forecast
1 8
2 12
3 7
4 9 9
5 15 10.75
6 11 10.5
7 10 11.25
8 12 12
9 11
2.833
7.369
3 mos moveing average forecast is better than weighted 3 mos moving avearge forecast
Compute MAD on 3 mos moving average
Compute MAD on weighted 3 mos moving average
Which is a better forecast method?

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Weighted 3 mos moving
average forecast
Absolute Forecast
Error 3 point
Absolute Forecast eror for
weighted moving avearge
3.018 0 5.982
2.3505 4.25 12.6495
3.4335 0.5 7.5665
4.0425 1.25 5.9575
3.1965 0 8.8035
3.255 11 3.255
Please apply weights
stated in the problem
3 mos moveing average forecast is better than weighted 3 mos moving avearge forecast

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Carpet CityMonth1234567893 mos moving averageDemand for Soft Shag Carpet (1,000 yd.) forecast8127991510.751110.51011.25121211Compute MAD on 3 mos moving average2.833Compute MAD on weighted 3 mos moving average7.369Which is a better forecast method?3 mos moveing average forecast is better than weighteWeighted 3 mos movingaverage forecast3.0182.35053.43354.04253.19653.255Absolute ForecastError 3 pointAbsolute Forecast eror forweighted moving avearge04.250.51.25011Please apply weightsstated in the problemos moveing average forecast is better than weighted 3 mos moving avearge forecast5.98212.64957.56655.95758.80353.255Petroco Service Stationalpha =0.3MonthOctoberNovemberDecemberJanuaryFebruaryMarchAprilMayJuneJulyGas Demand80072563050064569073081012009807710MAPDExp Forecast800.00777.50733.25663.28657.79667.45686.22723.35866.35900.442943.310.11415319211.42%Error0.00-52.50-103.25-163.28-12.7922.5543.7886.65333.6579.56AbsoluteError052.5103.25163.27512.792522.5452543.7816886.64717333.65379.55711234.37SUMPercentage00.0724140.1638890.326550.0198330.0326740.0599750.1069720.2780440.081181Science and Technology Mutual FundMonthFund Price3 mos moving average forecast12345678910111213141516171819202163 1/460 1/861 3/464 1/459 3/857 7/862 1/465 1/868 1/465 1/268 1/863 1/464 3/868 5/8 ...
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