Atime series model has been fitted and checked with historical data yielding:
Yt =27 + 0.42Yt-1 + et.
Supposethat at t = 40, Y40 = 37.
(a) Determinethe forecasts for periods 41 to 44 from origin 40.
(b) Supposethat the observed value of Y41 is 39. Update the forecasts forperiods 42 to 44.
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Wfinance 发表于 2015-5-11 23:33 a：42.54 44.87 45.84 46.26 b: 43.38 45.22 46.00
luosangum 发表于 2015-5-22 23:12 能不能发下b小题的具体步骤
Wfinance 发表于 2015-5-22 23:54
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